Unnecessary as it seemed, the police had to question Tate’s husband, director Roman Polanski

MICHAEL McGANN, Los Angeles Police Department homicide detective. Seventy-three years old, he is retired. The day after Sharon Tate and her friends were killed, we learned that Roman Polanski was en route back from London, so we made arrangements to meet at the studio where he worked. I interviewed him, because as you know husbands are always the first suspects. Although he wasn’t here, he could have hired someone to do it. The crime was so viciously done that you’d think whoever did it was really mad, and we didn’t know what the relationship was. The interview went very well. Roman cooperated to the fullest. The bigwigs of the studio were, of course, there, too. I asked him if he’d submit to a polygraph the following morning—Monday—and he said he’d be glad to. So he showed up Monday morning at Parker Center in downtown L.A., and a friend of mine, Earl Deemer, one of the best, did it. I was present one room over. I listened to it and watched, and Roman came through completely innocent. He was not involved in the case in any way, shape, or form.