“Marriage Camp” (7 p.m., TLC): This unscripted series could be subtitled “Can This

“Marriage Camp” (7 p.m., TLC): This unscripted series could be subtitled “Can This Marriage Be Saved?” Husbands and wives on the brink of divorce spend four days in “boot camp,” a program that helps determine whether the pairs can rebuild their fraying relationships. Cameras follow as program founder Jim Carroll and director David Bishop guide the couples through interactive exercises. The couples then choose to stay together or end the marriage. Each episode of the six-part series spotlights two or three couples.

“Phenomenon” (8 p.m., NBC): The search for the next great mentalist begins now: This five-week unscripted series, airing live, will pit 10 contestants against one another in demonstrating their special illusions and talents. Criss Angel and Uri Geller will offer their opinions on each week’s talents. The overall winner, to be chosen by viewers’ votes, will take home a grand prize of $250,000. Geller, known for his ability to bend spoons and other objects without touching them, is a judge on the Israeli version of this show; Angel is the star, creator and director of the A&E series “Criss Angel Mindfreak.”

“Wired Science” (8 p.m., PBS): Your fingernail never stops growing. So why shouldn’t your finger grow back, if it were severed? This isn’t just wishful thinking or science fiction, according to “Wired Science,” the PBS science and technology newsmagazine. This week’s edition explains how regenerative medicine is a reality (albeit rudimentary). One encouraging example: A man who grew back his finger tip, nail and all. Also during the hour, correspondent Adam Rogers combs Kansas wheat fields for rocks from outer space, and Wired editor-in-chief Chris Anderson explores the world of unmanned aerial vehicles. Chris Hardwick and Kamala Lopez are hosts.