Phineas & Ferb Early Comic Reader #3 Hey Wheres Perry

"Spend some time with best friends and stepbrothers Phineas and Ferb and see just how outrageous a summer's day can really be! Thrill as Perry the Platypus faces his most dangerous nemesis yet - the rogue rabbit known only as Dennis! As Phineas and Ferb create their own X-Ray glasses, Agent P must bring the bad bunny to justice. And what happens when the boys wake up to find that Perry is gone forever?"