Try this!

[jiggleking]

Having attacked a man, the thug might be worried if he'd left _ at scene of crime. Would the answer be clue or club?

[Spotty Dog]

Jiggleking, you must be new to this site. Please put all you queries in one post. You have taken up nearly all of today's spaces.
Having said that, nobody can really help with the type of questions you're asking. they are really just a matter of picking which one you prefer and hope it corresponds with the setter's answer.