In 1942, six people destroyed Anna Matheson’s family. Twelve years later, she’s ready for retribution. Under false pretenses, Anna has lured those responsible for her family’s downfall onto a luxury train from Philadelphia to Chicago, an overnight journey of thirteen hours. Her goal? Confront the people who’ve wronged her, get them to confess their crimes, and deliver them into the hands of authorities waiting at the end of the line. Justice will at last be served. But Anna’s plan is quickly derailed by the murder of one of the passengers.

Maya Killgore is twenty-three and still in the process of figuring out her life. Conor Harkness is thirty-eight, and Maya cannot stop thinking about him. It’s such a cliché, it almost makes her heart implode: older man and younger woman; successful biotech guy and struggling grad student; brother’s best friend and the girl he never even knew existed. As Conor loves to remind her, the power dynamic is too imbalanced. Any relationship between them would be problematic in too many ways to count, and Maya should just get over him.

Restauranteur Paddy Swann was the life of the party until the day a man pushed him in the path of an oncoming train, leaving his twenty-something daughter Ash and wife Nina devastated. Shortly after Paddy’s funeral, the two women receive a surprise in the mail: a note and package from Nick Radcliffe, an old friend of Paddy’s, and a nondescript lighter that once belonged to him decades ago. This unexpected gift draws Nick and Nina closer together—much to Ash’s dismay.

In this collection, expert Headspace mindfulness and meditation teachers guide you through seven 25-minute themed walks to help you connect with yourself and the world around you. Each walk is rooted in mindfulness-based stress reduction and other therapeutic techniques from Headspace’s teachers and mental health clinicians.

A new novel from Mulholland Books / Little, Brown and Company, publishing September 2025.