Most births don’t make headlines unless the mother is, say, Snooki. But the arrival of Chicago mom Sara Connell’s son, Finnean, did, because it wasn’t Sara who gave birth: It was her 61-year-old mother, Kristine Casey, who acted as a surrogate.

As you might imagine, that wasn’t a decision anyone made lightly, but after Sara and her husband, Bill, tried years of fertility treatments—and after Sara lost a third pregnancy following the shattering loss of twins at 27 weeks—Kristine made the remarkable offer, and Sara and Bill said yes.

Bringing in Finn: An Extraordinary Surrogacy Story, is Sara’s bracingly honest memoir, and it’s a testament to the power of family. Far from being sensational, it’s a moving and inspiring look at unusual choices made with love.

Still not sold? Watch the incredible preview below—you’ll see why you can’t pass this one up.