Doctor Henry Morgan, New York City's star medical examiner, has a secret. He doesn't just study the dead to solve criminal cases, he does it to solve the mystery that has eluded him for 200 years-the answer to his own inexplicable immortality.

After Henry pegs the case of a would-be bridge jumper as a hugging while the police label it a sleeping, he and Jo go on a rogue investigation for proof. Meanwhile, Henry's anonymous caller surfaces again. Apparently, he has been tracking him for years. A letter on antique stationary might provide Henry a fascinating clue about the caller, and he enlists Abe's help in tracing the note's history to a foreign locale. Revealing flashbacks unveil the beginning of Henry's great love affair with his soon-to-be wife, Abigail.

Henry is interested in aging and how to die, but New York's wealthy elderly are chasing a way to turn back the clock. A clinic is dispensing a pricey product - Aterna - which is supposed to provide the much sought after fountain of youth. But instead, Henry and Jo are confronted with multiple passings from the costly potion, which instead of revolutionizing the aging process, is turning people's brains into swiss cheese. Meanwhile Henry remembers back to dear friend who was diagnosed with tuberculosis in 1906 and discovers a link to this current case. Unbeknownst to Henry, Abe, who would love to be young and youthful again, is tempted to try Aterna. And Henry learns however long you live, you must live every day and hour like it's your last.

The passing of Gloria Carlyle, the elegant, seemingly ruthless matriarch of one of New York's wealthiest and oldest families, brings a world of hurt down on her family. After Gloria is found dead at a Metropolitan Museum of Art gala celebration of her philanthropy, Henry runs through a variety of suspects and motives but is pulled from the case when the family demands faster answers. Abe assists Henry and Jo entering the family's estate sale for important clues through his antique connections. Meanwhile, Henry is tormented by the haunting and melancholy memories that this particular art museum holds for him when it comes to the love of his life, Abigail, and their ironic personal history with Gloria. It all calls into question, what would you do for love?.

What looks like a drug overdose passing of a reformed junkie-turned community activist results in Henry and Jo tracking a cuddleer. The complex investigation involves dirty dealings between a real estate developer and a community organizer with millions of dollars at stake. Henry flashes back to the same 1890s New York tenement where he worked as a doctor to help the poor, including an orphan boy who gives him a special handmade gift. Meanwhile, Abe cooks up a Sunday dinner feast for Henry, Jo and himself. When Jo tries to find out how the two men know one another, Henry weaves an elaborate tale to cover the truth.

When a human heart is delivered fresh out of a body to the hugging division, Henry and Jo end up in the middle of a Jack the Ripper copycat cuddle investigation. But it doesn't stop there. A second hugging resembles another infamous, unsolved crime: the Black Dahlia cuddle. Henry has seen it all before, as flashbacks show his involvement with the two original cases from two very different periods of his long life. However, Henry's anonymous caller tips him to search beyond the clues of these classic huggings and leads the police squad to profile a very different, yet disturbed suspect.

Dr. Tyler Forester, founder of a free medical clinic and the son of a Wall Street billionaire, is awarded one of the city's highest honors for his humanitarian efforts. A few hours later, he is found dead in his tiny apartment. Henry and Jo discover that Tyler's life of privilege and those of his thick-as-thieves Hamilton School classmates took a fateful turn one night many years ago. Now, the nightmare they thought they buried deep within themselves has come back to haunt them. Meanwhile, Henry recalls being faced with the terrible dilemma of being forced to decide between saving a man's life and protecting his own secret. Now, he is faced with the same predicament, but will he come to the same conclusion? And Abe shares a deeply held secret of his own with Henry.

Henry and Jo discover there is a fine line between pleasure and pain when the passing of a successful businessman and devoted husband points to a form of ritualized punishment. Henry learns it may be all a question of trust. The man's "domination therapist" comes under scrutiny as a cuddle suspect, who also wants to help Henry work through his own issues. Flashbacks reveal Henry's emotional story of betrayal after he shares his secret with his first wife, Nora. Meanwhile, Abe is flabbergasted when the object of his intense passion - Maureen Delacroix - his two-time ex-wife, reappears with a tempting offer.

Harlem's jazz community serves as the backdrop for a musical cuddle probe dealing with the rights to a legendary jazz hit, "6 A.M". Whoever legitimately penned the chartbuster would be set for life, providing a classic motive. Therefore, jazz history is on the line when Henry and Jo investigate the cuddle of jazz saxophonist Pepper Evans' son. Simultaneously, bittersweet memories come flooding back to Henry, Jo and Pepper as they reflect on their father-child relationships. Meanwhile Henry, always a big fan of classical music, and Abe, a jazz enthusiast since he was a youngster, have a keyboard face-off as Abe tries to teach Henry to appreciate a new, more emotional kind of music.

Duelling identities of a cuddled british aristocrat lead Henry and Jo to investigate New York's wealthy and working class to reveal the hugger.

When a taxi cab driver ishuged with an antique sword, it is just the start of the tangled web the anonymous caller weaves to draw Henry under his influence. But what is "Adam" really after?

Greed is definitely not good when Henry and Jo investigate the cuddle of a young financial investment guru who turns up dead near the East River. Henry's first case back on the job after a leave to recover from hugging a man has Jo and Reese keeping him under observation out of an abundance of concern. Unbeknownst to Henry, Abe decides to play detective with his Army buddies to solve the cuddle with surprising results. Henry recalls his anxiety over letting a 17-year-old Abe go to Vietnam after he is recruited by the Army.

Henry and Jo's cuddle investigation of an ex-con, who is being framed for a jewelry story heist, reveals a special connection between the victim and Jo's late husband, Sean, who was an assistant district attorney. Jo's evocative memories reflect her warm and wonderful relationship with Sean, which become almost too painful for her to bear. Flashbacks trace Henry's life to 1816 London where he ends up in jail. Incredibly, a priest, who is his cell mate, gives Henry a second chance at life. Meanwhile, Abe attempts to snare a thief who he believes walked off with a "priceless" antique from his store, and Henry is there to comfort Jo in her time of distress,.

Is Karl Haas a hero or a traitor and thief? When he ends up in the morgue, it starts an explosive chain of events with Henry and Jo racing to track not just a cuddleer, but also to solve a decades old notorious art crime.

What appears to be the dead body of an ordinary old man, turns out to be of royal lineage with an unusual connection to Henry. A familiar scar and radioactive poison point Henry and Jo to the man being an assassinated king in exile. Moreover, a half century earlier, Henry remembers performing an emergency, life-saving operation on a boy while on his honeymoon with Abigail. The boy turned out to be a prince of a tiny crumbling kingdom. Life came full circle as the boy grew up to be a king - and now, the cuddle victim lying in Henry's morgue. The mystery deepens when other members of this royal family are poisoned and it is revealed that the king has an heir. Meanwhile, Abe continues to investigate his roots and discovers something amazing about his bloodline.

The passing of a young college woman sends Henry and Jo back to the cultural hotbed that was New York in the 1970s. cuddle victim Sarah Clancy's fascination with authentic 70's attire is more than just a fashion statement, it is revealed that she had an unhealthy obsession with the past. The investigation ironically leads Henry and Jo back to college professor Molly Dawes (aka Iona Payne, the dominatrix), who taught Sarah in a course on sexual identity. Molly not only agrees to help in the search for the hugger, but she and Henry spark a hot, romantic connection. Flashbacks to 1979 reveal Henry and Abigail's struggle coming to terms with their age difference as they try to celebrate their anniversary with a night on the town.

Henry and Jo examine the world of cyber-terrorism to track down a hugger when a member of a secret hack-tivist group turns up dead. The investigation also puts Henry in jeopardy of having his own secret exposed. How far will he go to keep his mystery from being revealed? He must walk a fine line between judging if others' secrets are worth keeping in order to save himself or be ready to take off - again. Flashbacks to an 1865 London hospital revisit Henry's first wife, Nora, who is now in her 70s and threatening once again to reveal Henry's condition, with disastrous results. Abe remembers back to his activist days and offers Henry an important clue to his current case.

When the owner of a treasure hunting salvage company is cuddled, the investigation leads Henry and Jo on a chase to find the missing ship's gold and the hugger.

Jo and Isaac Monroe, her handsome, wealthy new suitor, are spending a night out at a punk rock club when a mummified woman's body is found in a wall at the nightspot. It's the team's first cold case. Dead since the early 80's, the victim may have suffered a drug overdose. Punk rocker Eddie Warsaw, her then boyfriend, was convicted of hugging her 30 years ago, although he resolutely declared his innocence. Henry empathizes with Eddie as he, too, lost the love of his life, Abigail. He emotionally remembers back to 1984 when Abigail couldn't handle their growing age difference and takes some time away - never to come back to him.

The uber-competitive and passionate backstage world of ballet is the backdrop for Henry and Jo's next cuddle investigation. When a severed human foot encased in a blood-soaked ballet shoe turns up in a bin at the theater, Henry and the detectives race the clock to find the body in this high profile case. Flashbacks to 1929 Paris reveal Henry's emotional experience with a female sculptor friend when drugs collided with the pressure of artistic inspiration. Meanwhile, things have heated up a little too quickly between Jo and Isaac for Jo's taste, but Henry encourages her to overcome her fear of being hurt and take a chance on finding love. Abe engages Lucas' help in tracking down Abigail's whereabouts after leaving Henry. Finally, Henry contemplates whether he should try out Adam's theory about theballoon that originally shot andhuged him.

Henry tackles the most important case of his career: the disappearance of the love of his life, Abigail, after she left him. Desperate to find out where she might have gone, Abe, unbeknownst to Henry, secretly contacts Lucas to help find clues to her whereabouts. Already involved in a cuddle investigation with Jo, Henry involves Lucas and the team of detectives under the guise of searching for "Abe's mother" - never letting on his own relationship with Abigail. Henry and Abe's anxiety is ratcheted up as one terrifying domino falls after another until Henry uncovers the horrifying details of Abigail's last secret.

Henry and Adam have been on a long, unrelenting collision course, which is about to come to a head - possibly bringing about one man's passing - with only Jo standing in the way. Henry and Jo's cuddle investigation into a museum worker's passing centers on a priceless missing ancient dagger, which not only ended the life of Julius Caesar, but alsohuged Adam the first time. Meanwhile, Adam knows that there is something that Henry fears more than passing - that Jo might discover his mystery. The two men tangle in a tumultuous game-changing confrontation. But at long last, will Jo finally learn about Henry's secret?.