I'm hoping someone could help me find out about purchasing a typeface called Profundis (available in three styles, called Profundis One, Profundis Two, and Profundis Three), house unknown (I did have this information, though I have lost it). The typeface can be seen in use on the covers for Angie Sage's Septimus Heap series books (American editions).

Any help at all would be appreciated.

You will find showings of the fonts here

Also try to search http://luc.devroye.org if the site has info on Profundis