Hear ye, Hear ye! It is the future and Earth is over populated, the economy and the ecology are near ruin (sound familiar?). So, as an answer the (in)famous form-changing, mind-altering machines are invented that allow anyone with enough money to become whoever or whatever they want. (How this goes about solving the previously listed problems is not explained but then this IS fiction).
Naturally there is a bad guy (who may or may not be bad) and there is a tracker, Beh Wolf (ain't that knee slapper) who must find and make that determination as to which category he falls. There is a lot of business, several conversations, but one can never forget that this is just a book - and an unconvincing one at that. Wolf runs into the same problems and even uses the same dialogue as 19th century detectives (only jazzed up with techojargon). Unfortunately it appears that this story duo will become a trio.