Tierney

Tierney is a fictional law-enforcement officer featured in the Friday the 13th film series. Played by actor Ronn Carroll, he appeared in the original 1980 classic, Friday the 13th.

Biography
Tierney was a police sergeant and one of two men who discovered Alice Hardy floating in a boat in the middle of Crystal Lake. They brought her to a hospital and Tierney took her statement in which she described a young boy who attacked her in the middle of the lake. Tierney confessed that his men did not find any such person in the lake other than Alice.