Mark Henshaw was a poisoner, and a serial killer who appeared in the season Thirteen, in the episode ''All You Can Eat'', as the main antagonist of the episode. He is portrayed by Mark Schroeder.
History[]
Biography[]
Mark worked with his parents at a cookie restaurant with his surnane. However afterwards when his parents died, Mark was then left alone. That later resulted in the loss of his restaurant. Mark would also work as a buffet with a restaurant called Good Eatin Buffet. After that, Mark soon started his revenge, using rat poison, to kill Serena Logan, his first victim. Soon after, Mark would kill Clayton Osborne with the same poison he used against Serena. And after Osborne's death. This would then attract BAU's attention.
Criminal Minds[]
All You Can Eat[]
After killing two of his victims by rat poison. Henshaw, soon poisons The Arlington Business League, and causes the death of many people. And right after that at the end of the episode, Henshaw tries to poison everyone who worked for Good Eatin's Buffet. However, BAU had already tracked Mark, and they arrest him.