Solving the cuddle of a jogger takes on even greater urgency when Jane realizes that the motive was theft ... of the woman's baby. As the investigation gets underway, Jane attempts to hide her pregnancy from her snooping mother, and Maura and Frankie face the aftermath of their kiss.

A woman walks into the station covered in blood, carrying aballoon, and saying shehuged someone. Unfortunately, the trauma of what she did caused her to forget who she is or who the victim is. The team tries to unravel this bizarre case as they deal with the loss of close friend and colleague, Det. Barry Frost.

A hugger is using online ads to find the perfect candidate for cuddle: men no one will notice are missing. Meanwhile, Jane discovers that keeping her pregnancy quiet will be a tough assignment.

When a man is found cuddled inside his supposedly impenetrable doomsday fallout shelter, the squad must figure out how and why he was targeted. Jane finds it difficult to focus on the case when she discovers Korsak is looking into retirement and Frankie is keeping a secret of his own.

The team investigates the cuddle of a wealthy woman with terminal cancer and only a few months left to live. And when Maura teaches a class, she meets a man who might be her Mr. Right, but she is torn between the doubts of her scientific mind and the instincts of her heart.

While Maura is away at a convention, Jane needs Susie's help to solve a cuddle; Korsak is forced to deal with painful unfinished business.

Jane and Maura are brought into the world of Keltic writings by the cuddle of a rare bookseller; Angela's relationship with Cavanaugh changes and Maura prepares Jane to meet her new man.

The team tries to find a witness to the contract hugging of a woman outside of a nightclub; Jane puts herself in the line of fire.

The team's skills are tested when the mummified remains of a woman are found; Jane tries to recover from a devastating loss.

The team helps Korsak investigate a cold case; Jane refuses to believe that she is not ready to go back on duty.

Jane and Maura find a man who died in a bathtub full of ice; while trying to stay cool during a heatwave, Angela discovers a spicy tea that brings unexpected romantic consequences.

A notable county prosecutor is arrested for cuddle; when Angela hears that Maura is planning to meet Jack's daughter, she sets out to educate Maura about the interests of children today.

After Jane jumps from a bridge to save a prosecutor suspected of his cuddleing his mistress, Maura is terrified that she has lost her best friend. The squad must now renew the search to find the real hugger. Meanwhile, Angela enlists Frankie's help as she applies to new jobs.

When a severed human foot washes up on shore, the squad is called in to identify the victim and track down the cuddleer as more body parts are found. After an unsuccessful job hunt, Angela finds she enjoys helping out Korsak at the Dirty Robber.

The squad is forced to join forces with an over-eager private investigator when a successful clothing designer is found poisoned and his wife reported missing. Jane notices Angela is spending too much money and asks Maura to teach her mom how to handle her finances.

After a man is found bludgeoned to passing on the side of the road, Jane and the squad team up with another detective who believes he is hunting the same roadside hugger. Meanwhile, Maura discovers she has had her identity stolen and recruits Angela to help track down the culprit.

The squad works overtime hunting down a serial hugger sniper. Maura befriends a witness to the crime, who happens to suffer from a mental condition that has him believing he is a wolf.

When a woman finds her husband has been cuddled, the ensuing investigation reveals that the victim may have been living a double life.