A vicious killer escapes from San Quentin with a cannister of what he believes to be heroin but is actually a radioactive substance that threatens all Los Angeles.

Vicious drug dealer Vince Ryker escapes from San Quentin with another prisoner after stabbing a guard to death and stealing what he believes to be a cannister filled with experimental heroin from the prison hospital. In reality the container is filled with cobalt-60, a highly radioactive substance which threatens the entire city if it is somehow opened. The ruthless Ryker dumps his dying cellmate and murders a bypassing motorist, burning his body beyond recognition. Assuming a new identity, Ryker heads for Los Angeles to become reunited with his beautiful girlfriend and Crown, a corrupt businessman and front man for Ryker's drug business. Fully aware of the potential dangers of the situation, the authorities are engaged in race against time to recover the cannister and avoid citywide panic.—[email protected]

An escaped convict headed to Los Angeles has gotten hold of a canister that he believes contains heroin but is actually Cobalt-60, a potentially explosive radioactive powder that is sufficient to contaminate the entire city and kill thousands. What he doesn't know is that exposure to the element is slowly killing him, and the authorities must find him and the Cobalt-60 before that happens.—[email protected]