Their final road trip: Four states, three sisters, two dogs, one disappointing roadside attraction, and far too many secrets....

Molly Casey has been living her life at full speed, but it's about to slow down. With terminal cancer, she has one goal—get her estranged sisters talking. Her plan hinges on getting them to agree to a do-over of the last road trip their family took before everything fell apart. So, she hides her prognosis and asks them to drive her back to Seattle.

Penelope Casey, a lawyer who lives to work, and Scottie Dunn, a kennel owner whose deepest connections are with her dogs, haven't set eyes on each other in decades. The last thing they want is to be trapped in a car together for days on end. But when their sister calls, they reluctantly hit the road for her sake.

Unfortunately, Molly's plan to bridge the chasm between her sisters only deepens the rift as decades of misunderstandings, resentments, and secrets—a devastating accident, a withheld letter, a lineage laced with lies—spill out like dirty laundry from an overstuffed suitcase.

When Molly's health worsens, and she can't keep the truth about her condition hidden much longer, Penny and Scottie are forced to choose between holding on to the pain of the past or leaving it in the rearview mirror before it's too late.

Told through heartache, laughter, and moments of unexpected tenderness, Roadside Sisters is a powerful story about sisterhood, forgiveness, and healing.