21.   The only clues we have tell us where she was born but not where she died.

22.   The only clue to his past is a key found on him when police discovered him unconscious in a park.

23.   The only clue was a model number that ended in B instead of A.

24.   The only clue was a single bullet casing near the body, suggesting the weapon was a semi-automatic pistol, investigators said.

25.   The only clues to start a search from were a few photos and letters.

26.   The only clue is a piece of snakeskin found in one of the gowns.

27.   The only clue to its existence was a tiny logo of a Wyanoka Indian on a plain metal door.

28.   The only clue you might get is a musty smell coming up into the addition.

29.   The only clue is a set of pictures of a dismembered body in a garbage bag.

30.   The only clue Matt leaves behind is a diary written by his first wife, Suzanne, to their son, Nicholas.