Locke & Key 2x2 Direct

: This episode marks a turning point for Duncan as he transitions from a confused bystander to someone directly confronted by his stolen past.

: Tyler and Kinsey use the Head Key to help Duncan recover his fragmented memories. This exploration reveals the trauma he endured when his memories were forcibly removed by his older brother, Rendell, and the Keepers of the Keys. Locke & Key 2x2

For more details on the lore and the different magical artifacts, you can explore the Guide to the Known Keys on the official fan wiki. : This episode marks a turning point for