|Dying Light Appearance||Awakening|
It is revealed by Rahim Aldemir that Mark was visiting his brother, who was quarantined on the 13th floor due to a bite, only to find his brother had turned. He barricaded himself in an apartment bathroom, cutting his arm in his rush to escape from his former brother. Crane ventures to the 13th floor to search for him and finds the zombified brother pounding on the bathroom door. After he is dispatched, he helps craft gauze for Mark's wound while Lena is on her way to treat Mark. He is then taken up to the secured floors and is admitted to the sickbay.
Mark is not seen for the rest of the game, indicating he may have been killed when the 18th floor is massacred, or he is resting in one of the inaccessible apartments.