detective alex moreno didn't know what to make of this walk-in. >> at first, when he's giving you thisnformation, you don't know what to think, you know. here's a guy who's claiming that he's sleeping with a guy's wife. and now, she's trying to get somebody to kill him. >> it's a pretty juicy story. >> exactly. >> reporter: detective moreno had the tipster run his story down from the top. the man was named mohamed and he said he was a part-time actor who worked at a convenience store. as he told it, he'd been friends with benefits with a woman for years. they met for the occasional casual sex. then she asked him for help in finding a hit man to kill her husband. >> he says, "you know what, yeah. i'm sleeping with this guy's wife. but at the same time, i didn't want this guy to be killed." and that was his concern. he couldn't sleep with that whole idea that this guy was gonna get killed. >> reporter: but the detective wondered if he was being sold a cock and bull story since this mohamed guy didn't seem to even know very much about the woman he claimed to be sleeping with. the detectiv