Bethany C. Morrow’s 2018 Mem is a stand-alone historical science fiction novel.
Professor Toutant’s marvelous invention liberated the wealthy from the burden of unpleasant memories. A simple visit to the professor’s Montreal facility — the Vault — and one’s trauma can be off-loaded to an another being. Now relieved of the memory, the rich can go their way, while their Mem remains in the Vault.
Despite appearances, Mems are not people. They are automatons, who will reenacting a moment in time over and over until entropy claims them. The single exception is Dolores Extract No. 1.