A Body on April Fool's Day — Steve Demaree

Cy Dekker is ready to enjoy a nice breakfast at the Blue Moon diner with his good friend Lou Murdock on April Fool's Day when a dead body gets in the way. When they find out the man was not murdered, they get to enjoy breakfast together anyway, but a subsequent murder finds the two of them traipsing all over the county questioning a little bit of everyone who knew the man they found dead. The problem is that everyone they question seems to have a good alibi or no motive for murdering the man.