Giardello soon learns that Felton had actually returned from his long suspension to an offer to work undercover for Internal Investigations Division (IID), under the direction of Detective Stuart Gharty. Felton had been undercover for six months helping IID and the FBI build a case against a massive auto theft ring, but an information leak led to his cover being blown. He was personally murdered by the auto kingpin, who managed to evade capture. Beth wants nothing to do with Beau's funeral, so Kay Howard and Megan Russert handle the arrangements. A memorial for Felton is established in the police headquarters, and attended (on screen) by then-Maryland Governor Parris Glendening and then-Baltimore Mayor Kurt Schmoke.
