Bernard L. Kowalski

A backwoods game warden and a local doctor discover that giant leeches are responsible for disappearances and deaths in a local swamp, but the local police don't believe them.

A college student becomes lab assistant to a scientist who is working on a serum that can transform humans into snakes.

An astronaut is killed on reentry to Earth, but his body is seeded with rapidly gestating aliens.

Macho Callahan breaks out of a Confederate military prison, intent on revenge against the man who conscripted him into the army. Before he gets started, he kills another man in a petty dispute and is in turn pursued by the vengefu...

A rich, jet-setting playboy has a secret life: he's a professional hitman for the mob . When he decides it's time to retire, he finds his former employers don't like the idea of someone who knows so much not being under their cont...