O Twin, Where Art Thou?

It's been a tough night for Emma and Ethan, and things are about to get tougher when they find Sutton has disappeared after their argument and the Mercer family car is missing from the garage. When the police find the car at the bottom of the lake, Emma and Ethan look to each other for support, but Thayer threatens to tear them apart with his accusations against Ethan. Meanwhile, Char's aunt, Rebecca (guest star Charisma Carpenter, "Buffy the Vampire Slayer"), has returned to town and Char is the only one happy about it.