LAPD homicide division and Crews and Reese's new commanding officer following Karen Davis' demotion. Originally from New York, Tidwell is portrayed as having a very easy-going attitude, but takes his work very seriously when needed, excelling in situations of extreme chaos. Over the course of Season 2, Tidwell made romantic advances on Reese. Initially she rebuffed him, but eventually the two began an intimate relationship. Tidwell has three ex-wives, who all still love him, and is extremely paranoid and afraid of earthquakes (due to the fact he doesn't actually understand them). He has the habit of speaking of himself in third person at times, and once mentioned in "Crushed" to have played the trombone in a marching band for 13 years, but it is not known if he still plays. Logue was added to the cast in Season 2, as an effort to lighten Damian Lewis' workload. ADA Constance Griffiths (Brooke Langton) was Charlie Crews' attorney who was instrumental in finding and proving his innocence, leading to his release. As a result, Constance was asked to become an Assistant District Attorney, which she accepted. Constance and Crews are seen to greatly care for one another; both in turn make references to a potential relationship, if Constance had not been married. Constance was a main character in Season 1. Originally, Melissa Sagemiller was cast to play the role, but she was replaced by Langton in July 2007. Lt./Sgt. Karen Davis (Robin Weigert) is the head of LAPD homicide, and commanding officer of Crews and Reese during season 1. In cases she participates in, Davis is uptight, by-the-book and cares about enforcing the law; yet during the entirety of the first season she uses her power to attempt to get Crews kicked off the force by getting Reese to reveal any misbehaviour by Crews, true or not. Between Season 1 and Season 2, Davis, for reasons apparently affiliated with the mishandling of the Ames case, is demoted and returned to field work. While Davis is a main character in Season 1, she makes an appearance in only one season two episode ("Not for Nothing"). Recurring Arthur Tins (Jon Sklaroff) was a low-rate con artist who, in an attempt to con money out of Mark Rawls' son (claiming, falsely, to be a lawyer who knew something that could get his father out of prison) killed him with a shot to the back when