 Detective Sergeant Ellen Dunn, played by Phillipa Peak, is the leading officer investigating the attack on Patrick Trueman (Rudolph Walker).She interrogates Sean Slater (Robert Kazinsky), and later interviews Deano Wicks (Matt Di Angelo) when he is attacked after making a statement against Sean.One month later, she leads a team of officers to arrest Deano and Chelsea Fox (Tiana Benjamin) for attempting to pervert the course of justice.