TV HIGHLIGHTS

Mysteries Decoded, 9 PM on Ch. 26: U.S. Navy veteran turned private investigator Jennifer Marshall and her team launch a probe into a new American unsolved mystery in each episode of this new documentary series, exploring recently discovered evidence and utilizing high-tech tools in an attempt to get insights into such famous topics as the secretive site known as Area 51 and lingering questions around the Salem witch trials. The series premiere, “Lizzie Borden,” takes Marshall and paranormal medium Stephanie Bingham to Massachusetts to investigate an infamous cold case.

Supermarket Stakeout, 10 PM on FOOD; 1 AM on FOOD: Iron Chef Alex Guarnaschelli hosts this engaging new culinary competition series in which four chefs compete in three cooking rounds. Unfolding in pop-up kitchens outside supermarkets, an episode starts as Guarnaschelli gives the chefs $500 each, which they must use to cajole market customers to give up the bags of groceries they just purchased, without even knowing what the bags contain. The chefs may use only items acquired in this manner as they compete in the cooking challenges.

Flipping Exes, 10:01 PM on BRAVO; 12:31 AM on BRAVO: Exes Nina Klemm and Michael LeSure find themselves working with a dubious investor, who offers only a tiny budget, a half-finished house and a very strict deadline in the new episode “Hell on Heels.” That episode title presumably refers to Nina, whose temper frays when her budget is drained further by a growing list of new construction obstacles. Complicating things further, she’s also searching for the perfect home to suit a longtime but very picky client.