Two scientists on an expedition to the West Indies discover a serum which changes humans into cats, or. at least, to catlike killers. One believes they should continue with their experiments and the other does not, which disagreement costs him his life. Several deaths occur before the first scientist is halted in his mad plans.
The Creeper
A man is turned into a "catlike" killer by means of a serum invented by a crazed scientist.
