The Memory Den (quest)

The Memory Den is a side quest in Fallout 4.

Detailed walkthrough
This quest is obtained by entering the Memory Den in Goodneighbor at any time before rescuing Nick Valentine. Irma tells Sole Survivor the Den is not accepting new clients, but it is possible to convince her to grant a trial run, either with an easy Charisma check or an upfront payment of 100 caps.

One is asked to sit in a memory lounger to relive a recent memory, which is always the kidnapping of Shaun. During the recall, the player character can move around the cryo pod space of Vault 111 and interact with several targets including the cryo pods, the scientists in hazmat suits, Kellogg, and the pod containing Shaun and the Sole Survivor's spouse. As they relive the inevitable, the Sole Survivor vocalizes anguish, followed by rage and vowing to kill Kellogg after he shoots their spouse. Doctor Amari pulls them out of the memory after the events are relived.

Once the Sole Survivor emerges from the lounger, Irma apologizes for putting them through that trauma a second time. If a medium Charisma check is passed Irma will provide a refund if a fee has been paid. Regardless of how the conversation goes, Irma mentions that she knows a good detective in Diamond City that will be able to help find Shaun and points the player character to the Valentine Detective Agency.