TV HIGHLIGHTS

Guy’s Grocery Games,

9 PM on FOOD; 12 AM on FOOD: Host Guy Fieri introduces carnival-themed games and dishes to his six remaining chefs in “Summer Grillin’ Games Part 3.” Fieri gives the chefs a funnel-cake-sized twist by pairing them up to make a fried sweet-and-savory duo, plus a cheesy carnival classic. The pair that delivers the best dish wins $5,000 each and a spot in the semifinals, while the other four keep battling to survive. Eddie Jackson, Christian Petroni and Brooke Williamson are the judges.

Happily Ever Altered, 10:03 PM on LIF; 2:04 AM on LIF: Marriage requires a vow between the partners to take each other for better or for worse, but what if the engaged couple could start their union as their best possible selves? This special, also a pilot for a potential series, gives couples the opportunity to spend the run up to their marriage to become the best version of themselves, separating as they undergo their physical and emotional transformations until surprising their partner on the big day.

Secrets of the Bullshark, 10:03 PM on NGEO: Many experts regard bull sharks as the most dangerous shark species, yet when you get down to it, relatively little is known about these creatures. This new one-hour documentary unlocks some of the secrets of these huge beasts, including how they migrate and hunt. Dr. Ryan Daly, a marine biologist, leads a team of scientists using state-of-the-art technology to study the movements and behavior of these sharks, hoping to understand why these smart, ferocious predators keep venturing more deeply into our backyards.