What's New Tonight: Sunday, May 5th.

8:00 PM EST:

“Once Upon a Time” on ABC. Emma suspects that Tamara may be behind Regina’s disappearance. Mr. Gold debates telling Lacey about his powers. In the past, Bae travels to London and meets Wendy Darling and her family.

“The Simpsons” on FOX. A venture capitalist takes interest in Moe’s homemade whiskey. Grampa injures himself after babysitting Bart, but he quickly realizes he’d rather be looked after by Bart than by the nursing home. Lisa boycotts a hologram of music legend Bleeding Gums Murphy.

9:00 PM EST:

“Family Guy” on FOX. After the owner of The Clam is killed, Peter, Quagmire, and Joe will stop at nothing to save their favorite bar. Meg takes an afterschool job at a funeral parlor.

“Game of Thrones” on HBO. Robb tries to mend his alliance with the House Frey. Melisandre visits the Riverlands. Tywin enacts his strategic union plans for the Lannisters. Jon prepares to reach The Wall. Jaime’s fate rests in Roose Bolton’s hands.

“Revenge” on ABC. Emily readjusts to being Daniel’s fiancée again. Aiden has trouble accepting Emily’s new role. Jack learns some information that shocks him. Conrad will go to any lengths to turn around his slipping poll numbers.

10:00 PM EST:

“Mad Men” on AMC. Roger alters his technique in order to make new business. Pete has an awkward run-in with his client.

“Red Widow” on ABC. Season 1 Finale. Believing that Schiller is responsible for her husband’s murder, Marta turns to her father and Luther for help in eliminating him. Irwin says he’s ready to atone for his sins.

 “The Mentalist” on CBS. Season 5 Finale. Jane narrows down his Red John suspect list to seven people. As he does, the Red John targets someone from Jane’s past.

“Veep” on HBO. The White House releases an embarrassing photo of Selina. Mike regrets bonding with Kent. Jonah shows off his executive parking space. Gary introduces his girlfriend to the vice president.