A relatively unknown actress at the time, her portrayal of Henry's mistress Janice Rossi led to roles in "Jungle Fever," "The Naked Gun 2½," "Seinfeld," "ER," and "The X-Files." Clearly, Mastrogiacomo was a star on the rise. Unfortunately, the actress passed away due to a rare bacterial infection of the heart on May 2, 2001, at the age of 39.