Guest Stars Eugene Byrd as Dr. Sidney Trumaine Amy Aquino as Detective Lois Carver Jonathan Del Arco as Dr. Alex Cuevas Blake Lindsley as Prof. Katherine Danvers Jerry Hardin as Vernon Abbott Michael Mantell as Roger Shyler Peter J. Lucas as Karl Marchenko Co Starring Jon Huertas as Manuel Rios Joshua DesRoches as Lucas Wayne Mitchell as Uniformed Cop John P. Connolly as Neal Freely