Tragedy comes to everyone.

Many feel ill-equipped to deal with loss.

On a snowy Sunday morning in December, David and Marie Works and their four daughters were about to leave church - a typical scene for thousands of families - when suddenly a gunman appeared, shooting at anyone who got in his way. Rachel and Stephanie Works were killed, and David was critically wounded.

The shootings at New Life Church are one of America's greatest recent tragedies. At the heart of that tragedy is the Works family. A mum and dad left to cope without two of their daughters, two sisters left to grieve the loss of their siblings. How do you make sense of a gunman who goes to church - determined to kill thousands of people? Is forgiveness possible? Is 'moving on'?

For the first time, David and Marie Works reveal the complete story of that fateful day, how they've coped since then, details of their emotional meeting with the gunman's family, and what they learned when a parent's worst nightmare became reality. For anyone facing their world turned upside down, Gone in a Heartbeat tells a true story of hope and fearless faith.

Gone in a Heartbeat is the story of two girls who had big plans for the future - world travellers who only wanted to make a difference with their lives. A story that shares a family's grief, but also shares how their faith in God allowed them to forgive, to face each day, and to have hope for the future.

When tragedy strikes, will you be left standing?