Someone steals a vial of anthrax from a Phoenix Foundation lab and MacGyver recognizes him as a Navy SEAL whom he worked with and saved his life. Mac is told that the vial he took is only meant to be use in the lab and if the seal is broken, it could be the start of a plague. Mac learns that the Navy washed him out after the mission he and Mac were on, because they tried to make him come back too soon. He later calls his former C.O., the man who washed him out and tells him to come to his house which he booby trapped. Mac goes with him. Written by
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Mr. MacGyver. Got you working the night shift, have they?
Well, not exactly. I got a message from Dr. Kozby to met him in the Research Lab.
Yeah, we never know with him, do you?
Go right on through, sir.