The Umbrella Incident (also referred to as "X-Day") is known as the event when S.T.A.R.S. investigated the Spencer Mansion.[1]


  1. Unknown Japanese magazine, Biohazard 2 article (p.75).

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.