Lawrence Anderson goes to Henry Slocombe's house and tells him that he is a friend of Danny Rivera's. Henry says that Danny has always spoken highly of him. Lawrence then tells him that Danny has been in a terrible accident. Henry invites Lawrence in and asks what he's heard and how bad it is. Lawrence tells him it was some sort of severe head injury before he woges. Lawrence grabs Henry with his hands as he uses four of his tentacles to go into the back of Henry's head as they fall to the ground. After a few minutes, Lawrence finishes his attack on Henry. He stands up while Henry is disoriented on the ground. Lawrence grabs his stuff and is about to leave when Henry's girlfriend, Alexandra walks in. Lawrence grabs a little statue and hits her over the head, killing her.
Gedächtnis Essers are fleshy colored with a dark maw and multiple tentacles.
Gedächtnis Essers use four tentacles to burrow into their victim's heads to steal their memories which can be used to take over their identities. It takes considerable effort for them to process these stolen memories. Furthermore, it seems the memories extracted from a Grimm will leave them in a traumatic state given the violence they often inflict upon Wesen. Consequentially, they are quite fearful of Grimms.
It is not known how this Wesen removes the memories of its victims, only that it can. I surmise it has something to do with the electrical charges in the brain. After an attack the victims are usually diagnosed with advanced dementia.
From interviewing some of these unfortunate souls, I can see why. This is one of the most heinous Wesen I have ever encountered.
They rob the victims of their very lives by stealing their past and leaving them void of any human connection, devastating to their loved ones, and leaving the victim unable to identify the attack or the attacker. Justice within the confines of the law is therefore impossible.
I witnessed this Wesen attack a woman -- four of his tentacles pierced the back of her skull.
Henry Slocombe's skull after the attack of the Gedächtnis Esser