Investigation jokes

I've been looking for my ex-girlfriend's killer for the past two years.

But no one would do it.

How did they know that Princess Diana had dandruff?

They found her head and shoulders in the glove compartment...

Someone stole my toilet, and the police have nothing to go on.

My music teacher was investigated, but she was the one that taught me my fingerings.

Curiosity killed the cat.

But for a while, I was a suspect.

What do you call an alligator with a vest?

An investigator.

Today someone was killed with a starter pistol. Police think it might be race related.

4, 6, 8, and 9 have all been killed. 2, 3, 5, 7, and 11 are the prime suspects.