Thirteen guests. One killer. No escape.

On an island on the coast of Cornwall, cut off from the mainland by the tides for most of the day, thirteen old friends meet at Tregowan Castle for a weekend of revelry.

By the next evening only twelve are still alive.

Amongst them is a killer – but who? As a storm traps them on the island and past betrayals and grievances are revealed, nerves fray and friendships begin to fracture.

But with no escape and no way of calling for help it’s only a matter of time before the killer strikes again. And when everyone is keeping secrets, anybody could be the next victim…

Perfect for fans of Lucy Foley’s The Guest List and Agatha Christie.

Readers LOVE The Invitation!

‘Very cleverly written and a few genuinely jaw dropping twists. I loved it… This deserves to be on the bestseller list this year.’ – NetGalley Reviewer, 5 Stars

‘This story is very compelling, a real page turner and I didn’t guess the whodunnit.’ – NetGalley Reviewer, 5 Stars

‘This book was creepy, atmospheric… I really enjoyed reading it. Fab.’ – NetGalley Reviewer, 5 Stars

‘A fascinating take on a closed room murder mystery…’ – NetGalley Reviewer, 5 Stars

“A delicious puzzle trying to work it all out. I really enjoyed this!” – NetGalley Reviewer, 5 Stars

“A dark and twisty tale…” – NetGalley Reviewer, 5 stars

‘This was such a thrilling and interesting read, had me hooked from start to finish.’ – NetGalley Reviewer

‘This feels very Agatha Christie in terms of the grand setting and a cast of characters all with a motive for murder, it’s compelling reading.’ – NetGalley Reviewer

‘A thoroughly enjoyable read and some perfect escapism.’ – NetGalley Reviewer

The Invitation by A.M. Castle is a top-notch psychological thriller that will keep you on the edge of your seat. With its amateur sleuths, suspenseful crime scenes, and intricate detective work, it's a must-read for fans of the genre.

For fans of Sandie Jones (The Trade Off), Sue Watson (His First Wife), S. E. Lynes (The Summer Holiday), Tammy Cohen (The Wedding Party), and Kathryn Croft (The Suspect).

The Invitation: An absolutely gripping psychological thriller

The Invitation: An absolutely gripping psychological thriller