Bedside Detective, The (2007)

aka’s: Sailap Jap Baan Lek/
สายลับจับบ้านเล็

Jock (Sunny Suwanmethanon) is a television mechanic who spends his time on the side as a detective to catch cheating husbands and their mistresses in the act to pay the bills. Along the way he gets caught up personally in one case and as par the course complications ensue. Also with Patarasaya Krousuwansiri. (In Thai language, with English subtitles).