McHale's Navy - Season 3 Episode 18 The Truth Hurts
6.7030 minutes
In an effort to get the goods on the 73 Crew, Binghamton lures the boys into the hospital, under false pretenses, and has them injected them with sodium pentothal - Or 'truth serum' - Which causes them to tell him everything he wants to know. McHale and Parker must then work up a plan to get them off the hook, by literally giving Binghamton a dose of his own medicine.