a villain, a move urged by Fox. By the time the Vogler episodes began to air, the show had become a hit and the character was soon dropped. Shore said the concept of a villainous boss was not really viable for the series: "It's called House. The audience knows he'll never get fired." Stacy Warner (Sela Ward), House's ex-girlfriend, appears in the final two episodes of the first season, and seven episodes of season two. She wants House to treat her husband, Mark Warner (Currie Graham), whom House diagnoses with acute intermittent porphyria in the season-one finale. Stacy and House grow close again, but House eventually tells Stacy to go back to Mark, which devastates her. Michael Tritter (David Morse), a police detective, appears in several season-three episodes. He tries to extract an apology from House, who left Tritter in an examination room with a thermometer in his rectum. After House refuses to apologize, Tritter brings him up on charges of unprescribed narcotics possession and forces him to attend rehabilitation. When the case reaches court, Cuddy perjures herself for House and the case is dismissed. The judge reprimands Tritter for pursuing House to excess, and tells House that she thinks he "has better friends than he deserves", referring to Cuddy's 11th-hour testimony on his behalf. House is sentenced to one night in jail for contempt of court and finishes his rehabilitation under the influence of Vicodin. The candidates for House's new diagnostics team are season four's primary recurring characters. In addition to the three who are chosen, the other four finalists are Jeffrey Cole (Edi Gathegi), a medical geneticist; Travis Brennan (Andy Comeau), an epidemiologist; Henry Dobson (Carmen Argenziano), a former medical school admissions officer; and Amber Volakis (Anne Dudek), an interventional radiologist. Each of the four departs the show after elimination, except for Volakis, who appears throughout the season, having started a relationship with Wilson. In the two-part season finale, Volakis attempts to shepherd a drunken House home when Wilson is unavailable. They are involved in a bus crash, which leads to her death. She reappears late in season five among the hallucinations House suffers. Private investigator Lucas Douglas (Michael Weston), a character inspired in part by Shore's love of The Rockford Files, appears in three episodes of season five. House initially hires Douglas to spy on Wilson, who has ended their friendship after Volakis's death (the friendship is