When the Alien Liberation League (A.L.L.) break into the Interplanetary Zoological Park (I.Z.P.) and release the exhibits, all hell breaks loose on Chicago. Chris Gault is desperate. He knows the only way to contain the breakout is to muster every trapper he can to help re-acquire the alien specimens that are running rampant all over the city—even those that have retired—and Chris knows that his old friend and mentor Wyatt Dorren is just the man to get the job done. Once again Wyatt must face the creatures that he tracked and trapped before. Only this time it’s not jungle he’s facing. It’s suburban jungle—sewers, subways, cellars, rooftops. Every nook and cranny provides a hiding place for the alien escapees and new challenges for the teams that have to face them. Not only that, but there’s an hysterical civilian population that needs protecting too.
Intrigued by events surrounding the break-in at the IZP, Detective Superintendent Ed Lieberwits joins forces with the first police officer on the scene, Ed Wood. Together the cop and the detective will uncover a trail of evidence that leads them to a shocking conclusion.
Join Wyatt, Chris, Bobby, Kate, and Detective Superintendent Ed Lieberwits as they try desperately to free Chicago of its infestation and discover what really happened at the I.Z.P. that night.