The Big Bang Theory Wolowitz and Koothrappali (Simon Helberg, Kunal Nayyar) help Sheldon (Jim Parsons) with an online ad to find a girlfriend, while Amy (Mayim Bialik) is secretive about whom she is dating now in this new episode. 8 p.m. CBS
The Vampire Diaries Lily's (Annie Wersching) former flame (Todd Lasance) shows up in this new episode. 8 p.m. KTLA
Bones The mysterious death of a magician leads to a famous venue where some of his tricks may have earned him enemies. 8 p.m. Fox
Mom Emily Osment guest stars as a young addict whom Christy and Bonnie (Anna Faris, Allison...