“Undercover” is not a typical Columbo, by any stretch of the imagination. Columbo carries a gun. The mystery (such as it is) isn’t solved until the end. There’s no one central murder. He kind of has a partner. A lot of this is due to it being based on an Ed McBain 87th Precinct novel. But still, why on earth…? And the whole Tyne Daly thing? Anyway, Jon, RJ and returning guest Leonard Pierce (leonardpierce.com) try to figure out why this season 12 episode happened. It is a very, very strange thing.