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Samuels was a surgeon who worked for the crime lord Ethan Stewart. He had fair hair.
In 2503, two unexpected things happened for Samuels. The first was getting caught up in some kind of telepathic field of unknown origin. The second was that within the span of a few hours, he found himself operating on his employer, treating him for gunshot wounds. However, the surgery was left incomplete, the zerg invading the complex and Dead Man's Rock as a whole. Oddly enough, they seemed intent on retrieving Stewart rather than harming those tending to him. After doing so however, they reverted to their instincts, killing Samuels and his co-workers.
Golden, Christie (November 27, 2007). StarCraft: The Dark Templar Saga #2: Shadow Hunters. Simon & Schuster (Pocket Star). ISBN 0-7434-7126-1