Solve-it

The killer had to be Binky Quaker.

The killer had to be Binky Quaker. The only evidence of the killer's presence in the bedroom was the water ring on the table. The offending glass had a base the size of a quarter, much too small for a crystal water glass, a brandy snifter or a beer mug. Just the right size for a shot glass, however.

If Althea had tripped on the soap, it wouldn't have wound up right by the railing. It would have been pushed backward. Therefore, the soap was a decoy, planted there to make it look like an accident.