Briarpatch Season 1 (USA Network) -Who Killed My Sister-- Promo Trailer HD - Rosario Dawson seriesbr BRIARPATCH follows Allegra Dill (Dawson), a dogged investigator returning to her border-town Texas home after her sister is murdered. What begins as a search for a killer turns into an all-consuming fight to bring her corrupt hometown to its knees. The season celebrates the beloved genres represented by Thomas’ book -- a stylish blend of crime and pulp fiction -- while updating his sense of fun, danger and place for a new generation.