Lynn Collins

When a well-respected mathematician is found dead, Holmes and Watson set out to solve a murder and the purpose of the highly guarded equation he was trying to decipher. Meanwhile, Watson is conflicted when the son of a former patient approaches her for a loan. Jeremy Jordan guest stars as Joey Castro, the son of Watson's former patient.

When a handsome travel writer is found murdered -- with a woman's panties stuffed in his mouth -- Detectives Benson (Mariska Hargitay) and Stabler (Christopher Meloni) focus on a pedophiliac (guest star John Dossett), the unassuming boyfriend of the victim's landlord (guest star and Emmy nominee Patricia Richardson, ""Home Improvement""). However, the key to the case might be the landlord's rebellious 14-year-old daughter (guest star Lynn Collins), whose casual, seen-it-all sexual maturity makes Stabler uneasy about his own 14-year-old as she eagerly enters the dating pool. Richard Belzer, Dann Florek, Michelle Hurd and Dean Winters also star.

Across the country, vampires have come 'out of the coffin' after the invention of mass-produced synthetic blood. In Louisiana, Sookie Stackhouse, a waitress with telepathic abilities, falls under the spell of a sexy, 173-year-old vampire named Bill Compton--whose thoughts she can't read. After saving Bill from the Rattrays, a pair of ruthless 'vampire drainers,' Sookie tests the limits of Bill's gratitude when the two are left alone in the dark. Meanwhile, Sookie's best friend Tara quits one job to work for Sam Merlotte at his bar and grill, and Sookie's roguish brother Jason finds himself in hot water when a 'fangbanger,' whom he's been intimate with meets a tragic end.

Bill returns Sookie's favor by rescuing her from the Rattrays' revenge, healing the wounded waitress with his own blood and leaving her, temporarily, with heightened senses. After being invited into Gran's house for a 'get-to-know-you' gathering with Jason and her family, Bill joins Sookie for a nocturnal sojourn. They end up at Bill's dilapidated antebellum estate, where Bill fights off his primal vampire urges for the acquiescent Sookie. Later, Sookie's desires get the better of her as she returns to Bill's--and is greeted by a gaggle of his bloodthirsty vampire friends.

Foiled in their attempt to 'glamour' Sookie, vampires Malcolm, Liam and Diane make a hasty retreat after Bill lays claim to the waitress. At Merlotte's, Sam seeks a short-term remedy to his long-term loneliness, while Tara seeks respite from her mother's alcohol-fueled rage. Spurned by Dawn for lack of performance, Jason turns to Lafayette, Merlotte's short-order cook, for help with his problem.