I'm thinking the above review must be in error. I don't see anything about Corrie Ten Boom in this book.
Here is what it says on the back:
"Inside each of us lies a secret place, hidden from the view of outsiders. We live in fear and shame of anyone venturing too close to our secrets; our discontentment of what could have been, doubt, insecurity, bitterness and addiction. We cannot escape Satan's aim to keep us prisoners to our sins by using our own knowledge and strength.
The truth is God knows the secrets of your heart and He is waiting for you to give them to Him. He wants the key to your heart, your whole heart--especially the hidden parts.
'Who Holds the Key to Your Heart?' is your map through the deepest places of your soul, where God can reveal His truth and set you free. Once He unlocks every hurting and dark place, He will offer you hope, heal you with God's Word, and fill you with His redeeming love, joy, and peace!"