Sullivan's Crossing left fans with more questions than answers about possible breakups, more secrets and even possible cast exits ahead of season 4. Based on Robyn Carr's novel series, the CW show - which is now streaming on Netflix - follows neurosurgeon Maggie (Morgan Kohan) as she finds herself in legal trouble and returns to her hometown in rural Nova Scotia to reconnect with her estranged father, Sully (Scott Patterson). It took three seasons, but Maggie finally found her footing - and fell in love with Cal (Chad Michael Murray).