You get twice the Martin Landau for the price of one admission, as he plays murderous twin brothers in “Double Shock.” One’s a devil-may-care host of a TV cooking show, the other’s a staid banker with a crippling gambling addiction. It’s up to Columbo to figure out how they’re tag teaming their killings. Along the way, he also has to deal with a cantankerous housekeeper and an awfully weird Julie Newmar. Abed Gheith (Rick and Morty, Channel 101) joins Jon and RJ to talk about the episode and many, many other digressions.