Shatner's hairpiece - extracts from Inside Star Trek book.

Herb Solow: "Jimmy Doohan was there too. He recalls that 'Bill's hairpiece was being applied. The top of his head was a lot of skin and a few little odd tufts of hair. The mirrors in the makeup room walls were arranged so that we could all see the laying on of his rug.'" (page 236)

Bob Justman: "My gaze shifted to his (Shatner's) hairline. Examining balding actors' hairlines was a habit I'd picked up over the years. The 'lace' that anchored the front of his toupee glistened. I made a mental note of it to tell the makeup man about it before we filmed again. I was tempted to ask Bill if he had ever found the so-called missing hairpiece. But no, discretion was the better part of valor." (page 341)