Myth Conceptions is the second book in a series written by Robert Asprin. Skeeve the magician and Aahz the demon get invited to the kingdom of Posstilum by the king for a job interview. The job is court magician, that is what they know, what they don't know is that they have to stop an invading army. So Skeeve and Aahz must head to the dimension of Deva to hire a defense force.

Another great book with a suprising ending.