tell me the weirdest decision a player made that somehow helped them win in the end

Looking forward to hearing your responses!

For my short one-shot-ish adventure, the players were searching for a murderer in a small, tranquil village. Dun dun dun...

Anyway, as soon as they arrived in the village, they went to the local tavern. Only one person there, a beloved fisherman in the town. Of course, the barbarian decides to just casually put down his axe on the man's neck. 

They went to jail - they would be executed the next morning. 

As their execution's about to start, the crowd roaring and cheering for their deaths...of course, a man turns up, shouting he's found something in the fisherman's house - a diary with some suspiciously gruesome notes?

Of course...the man they killed accidentally at a tavern was the one that eventually was the murderer. 

:/