It's easy to mock Hugh Hefner (Joel McHale does a great job on "Talk Soup") but on "Hef's Runaway Bride" (Lifetime, 10 tonight) you might feel a little guilty for doing so. He comes across kind of sweet and sincere, the wronged party.

OK, it would be hard to believe the blonde, young Crystal Harris was madly in love with the octogenarian (Viagra-enhanced) lover, but this behind-the-scenes look at the-wedding-that-wasn't shows that maybe it wasn't about two people using each other for their purposes. What the show reveals is that something more typical happened: they were both doing what they thought the other wanted.

Yes, there were some machinations going on (after all, this was designed to be a reality show to promote the Playboy brand), but in "Hef's Runaway Bride" the relationship between the two seems sincere. Even Hef's sons, Cooper and Marston, speak about liking Harris, despite their concerns about their dad getting married.

Pretty Little Liars (8pm, ABC Family) - Alison's mom comes back to town and asks the girls to take part in a charity fashion show, which Mona helps run when Spencer gets too busy. Meanwhile, Aria works on stirring Jason's memory.

It's Worth What? (8pm, NBC) - Contestants are quizzed on the cost of various items and collectibles in a new game show hosted by Cedric the Entertainer.

History Detectives (8pm, UNC-TV) - Featured tonight is a letter that may be from Clara Barton in which she expresses concern about a soldier.

White Collar (9pm, USA) - Jones' classmate from the Naval Academy goes missing, so Jones joins Peter and Neal to investigate an international private security team, which could be linked to the disappearance.

Hef's Runaway Bride (10pm, Lifetime) - This special was supposed to be about Playboy magazine's Hugh Hefner's marriage to Crystal Harris, but instead, it's the story of the runaway bunny dumping Hef. This is an all-access special. Don't feel too sorry for Hef, though. He's still enjoying his blonde phase and I'm sure he's doing fine. Lucky Adrienne got to review it. 

True Grime (10pm, Investigation Discovery) - In the opener of this new reality series about crime scene clean-up, a grisly road-rage murder is examined.

HawthoRNe (10pm, TNT) - Christina and Nick team up to plan a birthday bash for Mama Renata (Miriam Colon). Meanwhile, Camille learns a seismic life lesson when she encounters Miles' wife.