Dark Island — Dorothy Daniels

FOR JANET THAYER, NO PART OF HAITI IS SAFE -- BUT RANCHO MARIA HAS ITS SPECIAL DANGERS.

Janet comes to the island illegally to find her missing brother; her only clue leads her to a mansion called Rancho Maria and its strangely hostile master, Ben Coburn. Reluctantly he protects her from the police, but asserts that she is in greater danger from voodoo. Her brother had been turned into a zombie; if she stays, she will die. Skeptical, Janet refuses to leave. Then she discovers that she is not immune to the power of the voodoo drums -- and that Rancho Maria is no refuge from their power to kill.