Bachelor Pad (8pm, ABC) - The worst thing about "The Bachelorette" ending is that it means "Bachelor Pad" begins. Fifteen castoffs from "Bachelor" and "Bachelorette" join five "super fans" in a Malibu mansion and begin competing for $250,000 in cash.
Vito (9pm, HBO) - This documentary profiles Vito Russo, a pioneer in the gay rights movement of the early 1970s who was also known as the author of "The Celluloid Closet," a 1981 book that examined LGBT characters in film.
The Closer (9pm, TNT) - Brenda investigates after a popular cancer doctor is savagely killed and his drug supply is taken, and a new assignment causes her to question Raydor's loyalty to Pope.
Bunheads (9pm, ABC Family) - This show gets better each week! Tonight, Michelle's pal visits to help her celebrate her birthday, but their festive plans get sidelined when Fanny takes off and leaves Michelle in charge of her dance classes.
Warehouse 13 (9pm, Syfy) - Following the destruction of Warehouse 13, the team races halfway around the globe in search of a dangerous artifact. This is the Season 4 premiere.
Alphas (10pm, Syfy) - Season 2 picks up eight months after last year's finale, with Dr. Lee Rosen (David Strathairn) having exposed the existence of Alphasto and finding himself descredited and imprisoned by a government desperate to cover up his revelation. Some of the team have disbanded and without Rosen's care and guidance, have regressed into old, destructive ways. A hostage situation forces them to reunite and try to save one of their own. Some of the guest stars on tap for this season include Sean Astin, C. Thomas Howell, Lauren Holly and Summer Glau. Check out the trailer for "Alphas" and a scene from tonight's premiere episode.
Teen Wolf (10pm, MTV) - Scott and Stiles attend Lydia's birthday party, while Derek locks his new wolves up on their first full moon together.
Perception (10pm, TNT) - Pierce and Moretti spring into action when a serial killer from 1986 returns and begins murdering again. Moretti receives advice about the case from her father, who investigated the original killing spree.