Peter Gunn S01 E17 Let's Kill Timothy

"Pete to his friends, Gunn to his enemies."

A couple of safe-crackers realize too late that the lookout on their jewel store burglary is no longer looking out, he's absconded with the most valuable jewels. The double-crosser bursts into Mother's nightclub to beg Peter Gunn to protect a mysterious 4th conspirator, Timothy, who turns out to be a trained seal. Why would anyone want to kill Timothy?