New threats, new foes…and a new partner?! This hilarious, action-packed spy seriesfrom the creator of Bird & Squirrelis perfect for readers who love funny crime-fighting stories like The InvestiGators, The Bad Guys, and Dog Man!

Agent 9 is back in action at the Super-Secret Spy Service, and it couldnt come at a better time. The next assignment? Stopping the Wolf, a cunning canine whos been hired by the sinister organization DiViSiON to hunt down the final pieces of a mind-control device. Its a mission of such paramount importance that Nine must do the unthinkablework with a partner!

S4 teams up Agent 9 with Traps, a mouse who specializes in covert operations (and knitting too). Unfortunately, the partnership gets off to a rocky start. And despite their best efforts, the Wolf always seems to be one step ahead. With time running out and DiViSiONs plans to take over the world nearly complete, can Nine overcome the toughest challenge yet: being part of a team?