At the age of 42, via a commercial DNA test, Tracey and her two sisters, with whom she was raised as triplets, faced a stunning revelation: At least one sister had a biological father different from the dad who had raised them. From 3 to 13... A Story of Secrets and Siblinghood covers the year following this genetic discovery as the sisters seek to determine if they are truly full siblings, confirm the identity of their unknown biological father, and navigate their unexpected new reality, all while connecting with additional family members they never knew they had.