Cathryn Wilderman was a American zoologist who worked at the Vault in the 1970s.
The Pale Man convinced Sir John Sudbury to let Wilderman work under Doctor Peter Morley at the Glasshouse. It was from inside the Glasshouse that she gathered information on UNIT and informed the Pale Man.
She later returned to the Vault where she examined the Silurian/Sea Devil hybrid Tahni. She was later shot and killed by the Irish Twins. (PROSE: The Scales of Injustice)