America's Got Talent (8pm, NBC) - Like this show? You get three straight hours tonight.
History Detectives (8pm, UNC-TV) - Investigated tonight: a spear that may have been used in abolitionist John Brown's raid on Harper's Ferry, why U.S. troops were in Siberia during World War I, and whether a Ronald McDonald costume was used in the first national Ronald McDonald ad campaign.
How the States Got Their Shapes (8pm, History) - The new episode of this show airs at 10, but the 8pm repeat examines North Carolina. There's also an ep at 9.
Pretty Little Liars (8pm, ABC Family) - Hanna assists Lucas with his dating life, and some of Aria's buried memory's resurface when she runs into Jason.
The Nine Lives of Chloe King (9pm, ABC Family) - Chloe adjusts to having sonic hearing, but she ignores Alek's advice to use it only when necessary. Also, Whitley resorts to bribery when the Order dismisses him, and Alek and Jasmine put Chloe on a rigorous nighttime training schedule.
White Collar (9pm, USA) - Peter and Neal pose as wealthy bachelors to catch a black widow.
Memphis Beat (9pm, TNT) - Dwight and Whitehead team up to investigate a missing-persons case, only to be stunned when a nun emerges as the main suspect. Meanwhile, Sutton happens upon an abandoned baby and reaches out to Dwight's mother for a tutorial on basic baby care.
Combat Hospital (10pm, ABC) - Rebecca and Bobby operate on a severely wounded soldier, and the blood supply dwindles. Also, Simon runs into an old flame, a photojournalist who sparks his interest anew.