S. P. McCarthy
Novelist & screenwriter

Steven Paul McCarthy

Steven Paul McCarthy is a novelist and award-winning screenwriter who writes horror, science fiction and mystery thrillers. His stories have drawn comparisons to M. Night Shyamalan for their love of a final twist that changes everything you thought you knew.

  • Horror
  • Science fiction
  • Mystery thriller
Portrait of Steven Paul McCarthy in a brown suede jacket, hands clasped under his chin

The books

Available on Amazon
Cover of Bay 13 by Steven Paul McCarthy: a steel door marked 13 in dripping black paint
A novel · Horror

BAY 13

Some doors only open from the inside.

Thursday night, 11:40 p.m. The streetlights on Aldermere Close go out, and a little girl says yes to something at the foot of her bed.

Across town, in a derelict dockside warehouse, a crew of professionals waits for the buyers who will pay £450,000 for three stolen women. They are careful men. They have a plan, a timetable and a rule: nobody goes outside.

What they do not know is that the thing that emptied Aldermere Close has found them. The buyers are due at midday. It will not need that long.

Contains scenes of abduction, human trafficking, violence and cruelty.

Adapted from the author's award-winning screenplay

Cover of Echoes of Humanity by Steven Paul McCarthy: a planet's lit horizon against a starfield
A novel · Science fiction

Echoes of Humanity

They remember everything. Except the end.

Sam wakes in a white room with no doors, no windows, and no memory of how he got there.

His only company is HANC, a seven-foot artificial intelligence that steps through walls as they melt away, watches his every move, and answers every question the same way: classified.

On the other side of the wall is Abbie, nine days into the same nightmare.

Together they break out of the facility and into a world they no longer recognise. Forests full of creatures that should not exist. Towns devoured by living vines. And a silent sky that holds the answer to what happened to everyone they ever loved.

They remember everything about their lives. Everything except the end.

Adapted from the award-winning screenplay

About the author

The twist is the point.

Steven Paul McCarthy is a novelist and award-winning screenwriter working across horror, science fiction and mystery thrillers. His novels Bay 13 and Echoes of Humanity both began life as screenplays. Readers often compare his work to M. Night Shyamalan's, thanks to his taste for the big reveal: the moment in the final pages where the whole story turns on its head.