[quote=@Guess Who]
The first thing he couldn't help notice was that the door just felt... off. [b]"Why's it feel like there's extra weight on the door?"[/b] Next he noticed his reflection staring back at him from the blunt side of a sharp knife. 

[b]"What's with the anti-psychotics?"[/b]
[/quote]

Shiro hasn't opened the door yet. Sapphire put the knife in on the interior side just before he opened it to prevent him from leaving.

Sapphire's actually had some limited medical training and even she had to look up what Shiro's prescription was for.