Tell your coworkers that Columbo stoops pretty low to solve a mystery sometimes, but the only time he followed lines drawn on the floor is in A Deadly State of Mind, in which a blind witness helped get the murderer to place himself at the scene of the crime.

That's what I thought. I've read and seen so much about Columbo and Peter Falk that I thought I'd have known about that, had it been true. I'll let my coworkers know I've consulted the experts, though!

(Good pun about stooping. A pity it doesn't work in Spanish!)