Fittes Agency is the most respected and eldest paranormal agency in Britain, founded by Marissa Fittes around 1965. Penelope Fittes, her granddaughter, is the current owner.
Hambleton Agency was merged with Fittes Agency at one point.
- ↑ The Whispering Skull, II: The Unexpected Grave, Ch. 4
- ↑ The Whispering Skull, V: A Big Night Out, Ch. 21: "Fittes House, headquarters of the estimable Fittes Agency, lies on the Strand just down from Trafalgar Square."
- ↑ The Screaming Staircase, IV: The Hall, Ch. 24
- ↑ The Screaming Staircase, V: And After, Ch. 25