What's New Tonight: Monday, May 20th.

8:00 PM EST:

“Dancing with the Stars” on ABC. The Final 4 dance 3 dances each, including cha-cha and freestyle.

“The Secret Life of the American Teenager” on ABCFAM. Omar breaks off his engagement with Adrian, breaking her heart, and causing her to lash out at others. Ben confesses to Alice some surprising information about Amy. Margaret and Ethan talk about Kathy. Clementine returns.

“The Voice” on NBC. The Top 10 contestants perform.

8:30 PM EST:

“Rules of Engagement” on CBS. Season 7 Finale. Brenda goes into labor on Adam and Jennifer’s wedding day. Audrey surprises Jeff. Timmy and Russell try to reconcile their differences.

“The Goodwin Games” on FOX. Pilot episode. Three heirs find that they can inherit millions of dollars if they are able to follow their father’s will, which directs them to complete a series of unusual challenges, forcing them to learn to act as a loving family again.

9:00 PM EST:

“Defiance” on SyFy. A war buddy meets with Nolan while a Castithan criminal with a violent history enters the picture.

9:30 PM EST:

“Mike & Molly” on CBS. Season 3 Finale. Mike’s mom dumps Captain Murphy, who lashes out at Mike and Carl by sending them to a Renaissance Faire. A tornado approaches and Mike and Molly try to contact each other with important news.

10:00 PM EST:

“Bates Motel” on A&E. Norman takes Emma to a dance.

“Motive” on ABC. Pilot episode. Homicide detective Angie Flynn investigates the murder of a popular high school teacher.

“Revolution” on NBC. Nora is tortured and left for dead. Monroe learns about Rachel’s plan with the Tower. Miles tries to figure out why his friends are being killed. Miles, Neville, Charlie, Hudson, Jason, and Sanborn try to escape the Plains Nation and join Rachel.