Zerpa Imaginscape Book One

In the future, travelers don't hop on a plane, they hop into someone else's imagination.  The most popular imaginers can host up to three million travelers at a time.  Competition is intense.  With intense competition comes cutting corners.

Stanton Zerpa investigates imaginers who cut corners.  His current case involves several travelers who have lost memories as the result of going into an imaginscape.  Several victims cannot remember what happened inside the imagination they traveled into.  More seriously, one traveler has lost his memory of an event occurring prior to his travel.

Then Emily, Zerpa's girlfriend, is plunged into a coma.

The doctors try every possible therapy.  Zerpa investigates every possible cause.  Will he be able to rescue her?  And if so, what will it cost him?