In the sixth book of the bestselling Passport to Peril mystery series by Maddy Hunter, Emily and her merry band of Iowan senior citizens travel to Scandinavia, where they are witness to more than just the sights in Helsinki after a tour member is murdered...

Sure, Jackie Thum's newly published novel might not be Hemingway, but bad reviews from her fellow travelers have Emily Andrew's transgender ex-husband (Jackie was formerly Jack) steaming like a sauna. It's a dismal start to their Scandinavian tour, and group leader Emily is getting that sinking feeling in Helsinki—something fishy this way comes.

When Jackie's most outspoken critic, a Floridian from a picture-perfect gated community called The Hamlets, is found dead, suspicion falls on Jackie—who surprises everyone with an airtight alibi. But when another guest turns up dead, Emily realizes there is a killer hiding among them. Herrings, both red and pickled, abound on a Norwegian fjord cruise—and Jackie is suddenly nowhere to be found. With her mother arranging a wedding disaster for Emily back home in Iowa, Emily must somehow salvage her nuptials from overseas while icing a killer—before someone else meets a nasty Finnish.