Should some secrets stay buried?

For as long as Cassie Hunt can remember her Aunt Aggie has spoken about the forgotten world that exists just below their feet, in the tunnels and catacombs of the Sand House. The story is what inspired Cassie to become an archaeologist.

Nine hours and eleven minutes …

That’s how long it’s been since Ella Hope was beaten to within an inch of life and left for dead.
She lies, unable to move and praying for somebody to find her, as she counts down the minutes and wonders who could have hated her so much to have hurt her so badly.
Was it the man she went on a date with the previous evening, the man linked to the deaths of two other women? Or somebody else, somebody who wants her out of the picture so much they’re willing to kill?