You answered my request, also Hellenwheels, contributed but i can't reply, so thanks, you are right, 'piece of cake' was the name of the bbc miniseries, i was asking about.
academy of pilots in wwi, the theme music was a taunting sacrilegious sing-song about hells bells, anyone remember it? main character crashes and is hideously disfigured.
Wm Powell gets bitten by dog trying to keep himself from being suspected in the disappearance of the very hot Shelly Winters and proves that people shouldn't be ruined/blacklisted because of rumor or false arrest/accusation