Which Peter Sellers Movie has this comedy shower scene in it??

Question

I've been trying to find out which movie this scene was from (may not be pink panthers)...Peter Sellers investigates something in a hotel, to avoid detection he finds his way into one of the hotel bathroom's which is steamed up (its in use), & the floor is wet. He & another character try to avoid detection but slip over & over again on the wet floor...the more they try to run, the more they slip.
I remember watching the movie but cant remember what it was called...just that scene!! please help me out!
Thanks

Answer 1

Return of the pink panther. The other guy in the scene, the hotel bell boy, is played by Mike Grady,now appearing in Last of the summer wine. There.

Answer 2

That's the Return of the Pink Panther. He's investigating that blond lady, because she's married to the guy he thinks is the Phantom (Christopher Plummer, and he IS the Phantom). Inspector Clouseau and the bellboy get trapped in a sauna in her suite when she unexpectedly returns while he's snooping.
Thanks for pointing that out. You're right, the diamond is what they're all after, and it's called the panther because when the light hits it there's a small running pink panther inside it.

Answer 3

Sorry to pour water on an otherwise excellent answer but ,Lady, the Pink Panther is actually a diamond