What's New Tonight: Sunday, April 21st.

8:00 PM EST:

“The Amazing Race” on CBS. Only five teams remain! The finalists visit Germany and dive 37 stories through the sky. Later, they are tasked with making a trippy journey through a psychedelic labyrinth.

“Once Upon a Time” on ABC. Mr. Gold requests David’s help in retrieving Belle’s memories. The magic beans begin to grow, which forces Emma to try and decide which world she’d rather live in. In the fairy tale world, Rumplestiltskin and Belle track down a thief that Belle had set free.

“Lovestruck: The Musical” on ABCFAM. A former Broadway star drinks a magic potion that de-ages her by about 30 years. With her newfound youth, she’s in the perfect position to try and sabotage her daughter’s wedding.

9:00 PM EST:

“Game of Thrones” on HBO. Margaery pushes Joffrey out of his comfort zone, and shows Sansa a glimpse of the future. Arya meets the leader of the Brotherhood Without Banners. Daenerys makes her grand exit from Astapor.

“Army Wives” on LIFE. Gloria and Patrick end their relationship. Denise tries to play peacemaker for Gloria and Jackie. Michael clashes against a new female colonel. Eddie and Patrick finally arrive in Afghanistan.

“The Good Wife” on CBS. Peter asks Alicia to renew their vows. Kalina pits the factioned firm against one another. Alicia takes a case as a favor to her mother, but the case involving software coders in contract disputes leads to unexpected consequences at the firm.

10:00 PM EST:

“Mad Men” on AMC. Joan gets a visit from an old friend, and the partners try to keep a secret campaign secret.

“The Mentalist” on CBS. While investigating the death of a woman who sought dating advice from a talk show host, Rigsby and Van Pelt go undercover as a troubled couple.

“Vikings” on HIST. Ragnar tries to accept the death of his unborn son. Lagertha begs for answers from the gods.