Sins of the Preacher (8pm, Lifetime) - A pastor's wife dies and it's ruled a suicide, but her mother doesn't believe her daughter killed herself. She tries to prove that her daughter's husband, a beloved pastor, is a murderer. Inspired by a true story. Stars Gail O'Grady ("Desperate Housewives," left), Bree Williamson ("One Life to Live") and Christopher Gratin ("The Mentalist").
Million Second Quiz (8pm, NBC) - Apparently this comes on every night.
Hell on Wheels (9pm, AMC) - A cholera epidemic in Hell on Wheels has Cullen seeking fresh water to help save his workers. Meanwhile, Durant faces political fallout.
Robocroc (9pm, Syfy) - A crocodile is transformed into a killing machine that's let loose in a water park full of young adults.
Hello Beautiful Interludes Live: John Legend (10pm, TV One) - Singer John Legend performs and discusses his career.