Burt finds and kills a Shrieker in the valley, only to learn it was apart of a government funded project to train Shriekers for rescue missions. But when a storm knocks out the equipment controlling them, the remaining Shriekers escape and multiply. Now to survive, the Perfection residents must make a stand at Burt's place.

John is hit by lightning on his chest-brand and can see in color andmdash; going to see a fresh body, John realizes he's also lost access to his vast supply of knowledge and all the physical talents it provided. It's not a good time as a killer strikes, leaving a kidney from his victim with the promise of more to come. The killer strikes again with two killings as John tries to come to terms with his newfound ignorance and the loss of his money when he can't call the shots for his broker. John is bitter and reluctant to admit his newfound loss to anyone, and a disappointed killer threatens to come after him. It turns out that two women, sisters, are working as the killers and lure John into a trap andmdash; fortunately John figured the killer(s) were women and he'd be targeted and the police have him wired and are watching. While pursuing one of the killers John is hit with electricity again and is back to being color-blind and super-smart.

A quadruple homicide with sexual overtones is just the start of an intense rampage of killings that brings a homicide detective into the mix. As the entire squad races against time to prevent further victims, the evidence lead Tutuola and Deuthorn to a building superintendent, his two sons and a cross to bear.

In this episode, Penn and Teller offer you a new diet-that you don't eat until the show is over. Sounds like bullsh**? Well it is and so are many health products that claim will make you a healthier person and loose weight. Such as the Hollywood diet, where you don't eat anything for 48 hours except for water and the Hollywood diet shake. Penn and Teller take a look into this diet and see one person's weekend on it.
Also in this episode, Penn and Teller take a look into the movement to ban genetically engineered food, even though it may produce more food for the poor and may even make it healthier.

Rated: TV-MA for Adult Content (AC) and Adult Language (AL)
Tonight's episode is Live from L.A.
Roundtable guests Michael Graham, Arianna Huffington and Aaron McGruder gave their spins on racism and other topics. Jeff Ross closed the show with a comedic performance.

Ash, Brock, and Misty meet up with a witch named Lily. She is seeking ingredients to conduct a spell to make humans more friendly with Pokemon. The one last ingredient she needs is tears of an Aipom, and the group fights Team Rocket to get an Aipom. Lily then conducts the spell, turning Ash into a Pikachu!

With the power down and the ED in chaos, Harry takes drastic measures to save a patient. As Merlin looks forward to meeting his birth mother, she has second thoughts, and Duffy is in for a shock when a familiar face returns to Holby.