Gives voice to the experiences of Irish institution survivors and focuses on the life and upbringing of one survivor, Anne Silke. Silke was fostered out of the St. Mary, Bon Secours Mother and Baby Home in Tuam at the age of 9 to the Killileas, a prominent political family from Tuam. Untold Secrets recounts her often brutal and abusive treatment at the hands of her foster family and reveals never seen before interviews with fellow survivors. Although Silke is now deceased the documentary gives a posthumous voice to Anne and possibly some closure to her family.

For decades, Catholic Ireland locked its children into institutions if they were conceived out of wedlock - punishment for the sinning mothers. Revealing the children's perspectives, and including powerful archive, this documentary offers a painful yet cathartic insight into the cruel business of Mother and Baby Homes.