Law & Order S15E12 - Mammon

Not long after a wealthy venture capitalist is found slain in his spacious home, Detectives Fontana and Green suspect the victim's feckless young wife (as Marley,Andrea Roth), as well as the handsome contractor (as Tremont, Daniel Sunjata) who installed the security system and was romantically dallying with the wannabe widow. On the legal side, DA's McCoy and Southerlyn seek to turn the cheating wife against her ex-beau, but the bad boy's many "alibi girlfriends" and a second unexpected crime severely hamstring their prosecution.