In fourth season episode Fractures, the vengeful spirit of Alice Liddell, whose descent into madness was presaged in Lewis Carroll's Alice in Wonderland and Through the Looking-Glass, escapes her imprisonment in Carroll's mirror and immediately destroys it, keeping a shard for herself. Alice's psyche, having escaped her mirrored prison by possessing/hijacking an unfortunate victim's body, finds that she can now jump to a new host simply by making them look at their reflection in the fragment. Alice leads the Warehouse agents on a merry chase as she takes over one person after another, eventually winding up in Claudia before being forced back into the mirror shard by a blast from Steve's Tesla.
Multiple production-made mirror fragments, of similar shape and size, in different styles including mirror-backed thick and thin hard plastic, and soft foam with thin plastic reflective silver surface & faux bloodstains.
From VIP Fan Auctions & NBCUniversal.