It's Valentine's Day, and Cam is at school when she learns her mother is about to give birth. Cam and her best friend, Eric, rush to the hospital with his mom. There, in the waiting room, something valuable disappears. Click, click! Cam starts to unravel the mystery. Will Cam solve it before her Valentine sibling is born?

David A. Adler (www.davidaadler.com and www.camjansen.com) is the author of more than 175 children’s books. Before becoming a children’s book author, he taught math and science, and completed master’s degrees in marketing and economics. He lives in Woodmere, New York.Joy Allen (www.joyallenillustration.com) has illustrated many children’s books, including Pleasant Company’s Hopscotch Hill School series. She lives in Garden Grove, California.