"AMERICA'S MOST WANTED: AMERICA FIGHTS BACK" IS ON THE HUNT FOR THE RIVERBED RAPIST SATURDAY, JANUARY 22, ON FOX

AMERICA'S MOST WANTED is asking viewers to help track down a ruthless rapist. A filthy drainage tunnel in Los Angeles is the location of a terrible crime spree in which, police say, seven women have been raped, then dumped, by a man they're calling "The Riverbed Rapist." Cops say the attacker found all of his victims at a nearby bus stop, where he offered them rides. But what the victims didn't know was that the rapist would be taking them to one of the most disgusting places in Los Angeles - a concrete riverbed that carries rainwater and sewage through L.A. AMW is asking viewers to get this monster off the streets on Saturday, Jan. 22 (9:00-10:00 PM ET/PT) on FOX. (MW-1814) (TV-PG V)

Host: John Walsh