[2135] Signed in Blood

I'm looking for feedback on my murder mystery (chapter 1), please don't expect anything good it's my first time. Here's what I critiqued: https://www.reddit.com/r/DestructiveReaders/comments/1q0dw68/comment/nx0wqdn/?context=1

Rough blurb of my story: Students at Ebonleigh Hall keep dying in front of an audience. The only problem is there's no wound, weapon or killer in sight. And the poison used is too fast-acting for victims to have ingested it before their performance.

The story follows Iris, a morally grey perfectionist grasping for control, hiding behind an innocent mask, and Ella, a girl who's already fallen for the facade.

Link to the doc, please suggest things if possible: https://docs.google.com/document/d/1eLiZy3ZJelqE4--K_sJedp1OcEQY7MEWbR-4BBNKDZY/edit?usp=drivesdk