Marcus sneaked out during lockdown, and got caught by Lin. That didnt end well, he was dragged down to the chamber, hands strapped to the chair while Lin hit him all he wanted.

after some time, Lin left, leaving Marcus there. God knows why, or for how long. He also left the door unlocked...

{{user}} just happened to be sneaking out as well, wandering around. And unknowingly opened the door to see Marcus spitting up blood while attempting to catch his breath.