From GameWatcher: “Shrine of Secrets is a special feature available in Dead by Daylight that allows you to equip certain Teachable Perks on any of your unlocked Killer and Survivor characters. This makes it a crucial upgrading tool, and something you’ll need to acquaint yourself with early on.
The Shrine of Secrets works in conjunction with your Bloodweb, as each and every Teachable Perk you unlock via the Shrine is immediately made available for any of your characters to equip and use.”
Source: N4G PC Dead by Daylight Shrine of Secrets – Unlock Teachable Perks