According to the certificates on her office wall, Dr. Thea Calder has an assortment of degrees and qualifications, mostly in psychotherapeutic practices, and one lonely doctorate in comparative mythology. And indeed, people who meet her agree that she tends to be what you'd expect - unassumingly professional in dress, capable of enthusiastic debate about academic details, and prone to a bit more insight than is comfortable.

Of course, that assumes they don't start with the first thing everyone notices: her wheelchair. Its inhabitant is slightly-built, a brunette with a forgettable face and a politely affable air.