I would not wish this upon my worst enemy. God damn Aunt Jemima.

Was the syllabus out of date?

Well, at least you're prepared for the unexpected exam, right?

"You never thought it was odd that your required reading was Harry Potter and the Goblet of Fire?" "Why question a good thing?! Plus, it's a legit example of child endangerment!"

"how to break out of prison."

Study smart. But never study hard.

Find it on tape...you'll get through it faster...may be a bit more than you want to spend but you can return the book if it isn't too late

How did you not notice it was the wrong book until you finished a whopping 700 pages?

Don't fret, knowledge gained is always a good thing

Explain it to the prof and point out that you'd bill it to the client anyway. So long as it's not an ethics class, you'll probably get extra credit.