What would be a crucial piece of evidence?

Don’t make me quote the Shaggy song.

Finding a pair of underpants that dont belong to you (or your other arf) in the bed…...........

or…..

in the glovebox of the car!

This http://www.fluther.com/disc/47881/how-can-i-get-blood-stains-off-of-my-wall/ seemed like crucial evidence, but turned out it wasn’t.

The naked guy standing in your kitchen, at you’re fridge!

The Smoking Condom.

I’d imagine that the gun with your fingerprints on it and powder residue on your hands would qualify as crucial pieces of evidence .

Surveillance tape and a body in the trunk of your car

A recovered bullet. The pattern of lands and grooves link it to the weapon like a fingerprint. I testified as as expert in a murder trial on this point.

Mac and BonaSera spraying that purple stuff on you to see if you have blood spatter or dabbing your paws to see if you have GSR…......

A kid next to a freshly hand painted wall with red paint all over his hands

In the case of the missing double chocolate fudge cake with its oh so delicious cream cheese icing…......the crumbs leading to your room !!!

That bloody hammer in your toolbox.

A blue woman with a shovel standing in the dining room.

A letter, a hotel registration book, the receipt from the shop where you bought the equipment and a series of photographs.

being seen on video tape, anything that could contain DNA like hair, spit, semen, blood. Fingerprints.

A floating turd in an unflushed toilet. Classic who dunnit.

A rope in the Drawing room with Colonel Custard!