The Terminators by Donald Hamilton is a spy novel first published in April 1975.
This image was subsequently used for reprinted editions of a number of the earlier stories.
A longtime friend of Mac, Helm's boss, blames Big Oil for his wife's death aboard their modest yacht; in retaliation, he wants Helm's secretive, and murderous, agency to make trouble for an international oil company.
Mac assigns Helm to get to the bottom of this request — and to "take care of" his friend.
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