be long ago. He had a stormy relationship with Cassidy, which after many ups and downs, ended when he was killed in the line of duty. Evan had reconciled with Cassidy at the time and was engaged to her for a Las Vegas wedding. Previous to that, Evan went through a painful period during the fifth season after his breakup with Cassidy (after he'd cheated on her on the eve of their wedding) and the loss of his job as a drunk on a downward spiral. With Joe's intervention and his own participation in a 12-Step Alcoholics Anonymous program, the character became a Christian and recovering alcoholic. Jaime Gomez appeared in all but six episodes of the series' first five seasons. Cary-Hiroyuki Tagawa as Lieutenant A. J. Shimamura (seasons 1 & 2): A former police superior who worked closely with Nash and the SIU as both co-worker and friend. A. J. held true to a promise that if he wasn't promoted to captain, he would leave the force and move back to his native Hawaii, which occurred during the second season. Serena Scott Thomas as Kelly Bridges (seasons 1 & 2; guest season 3): A socialite and former drug addict, and Nash's second ex-wife. Annette O'Toole as Lisa Bridges (seasons 1 & 2; guest season 4): A caterer by trade, she is Nash's ex-wife and mother of Cassidy. She moved to Paris after she and Nash revealed their true feelings to each other. James Gammon as Nick Bridges (seasons 2–6; recurring season 1): Nash's retired longshoreman father who lives with him. He sometimes gets into some minor trouble which leaves Nash to save him. He also tends to get involved in Joe Dominguez's get rich quick schemes. Nick suffers from light dementia and that affliction was dealt with thoughtfully throughout the series. A source of conflict between him and his son was the character's preference for his older son, Bobby Bridges, over Nash. Mary Mara as Inspector Bryn Carson (season 2; guest seasons 1 & 3): The only female member of the SIU at the beginning of the series, she was often used to go undercover when a woman's role was needed. She was not known to have a very successful romantic life. She transferred out of the SIU at the start of the third season. Kelly Hu as Inspector Michelle Chan (season 3; guest season 4): An aggressive inspector