Zombies' Day Off / Pat + Jen

"After defeating Evil Jen and closing all the portals to the underworld, they have nothing to worry about, no villains to defeat, and no adventures to go on. Awesome, right? Until a mysterious voice tells Jen that she has to go to the underworld to uncover a secret about her past. It is a questshe can only undertake alone. With Jen off to find out the truth and Pat desperate to find Jen, the heroes almost don't notice that a sinister plot is afoot. There's a new villain in town, and his team of ninja sailors are determined to take over the underworld and the real world. To defeat him, Pat and Jen might just have to do the unthinkable--team up with Evil Jen! But can Pat and Jen find each other and find a way to work with their nemesis to stop this sinister plot before it's too late?"--Provided by publisher.

"After Pat and Jen saved Bomby, their cat Cloud, and one hundred friendly zombies from the clutches of Evil Jen and brought them home from the underworld, they thought their adventuring days were over. But ever since their return, more mysterious new holes have started appearing--and more and more of their friends have started disappearing! After Jen stumbles into one and Pat rushes after her, they find themselves trapped in a dark, dank boomium mine. Now Pat and Jen need to free their friends, figure out who's behind this evil plot, and find a way to get back home--before it's too late"--Amazon.com.