|Affiliation||S.H.I.E.L.D. / SSR (formerly)|
"Making Friends and Influencing People"
"A Hen in the Wolf House"
"A Fractured House"
"The Writing on the Wall"
"The Things We Bury"
"Who You Really Are"
"S.O.S. Part One"
Vault D is the fourth of an unspecified number of basement or sub-basement facilities of the Playground. It was used to detain former Agent Ward whilst Coulson and Skye in particular attempted to extract intelligence. Long before it ad served a similar purpose for Agent Carter with regard to Daniel Whitehall, or rather Werner Rheinhardt, as he was known at the time.