The Backdoor Key (裏口のカギ Uraguchi no kagi ) is a key item in Resident Evil 6.
It is found by Leon and Helena while exploring Tall Oaks. It is inside of a family's home, attached to the belt on a corpse in the living room. When it is found, a scripted event occurs when another of the three bodies re-animates and attacks.
- Hideki Osada, ed (2012). BIOHAZARD 6 Official Complete Guide. Famitsu. ISBN 978-4-04-728612-2.
- Resident Evil 6 Signature Series Guide. BradyGames. 2012. ISBN 978-0-7440-1422-8.