There are 3 books in the An Aidan Waits Thriller series. The newest book is The Sleepwalker which came out in 2016.

1
Sirens

Book cover of Sirens

'Brooding, blistering. Sirens is a remarkable literary thriller, perfect for fans of Ian Rankin and James Lee Burke' AJ Finn, author of The Woman in the Window

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I stopped going to work. I went missing. We still live in a world where you can disappear…

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2
The Smiling Man

Book cover of The Smiling Man
From the acclaimed author of Sirens, damaged Detective Aidan Waits returns in a mind-bending new thriller that will have everyone asking “Who is the Smiling Man?”

Aidan Waits is back on the night shift, the Manchester PD dumping ground for those too screwed-up for more glamorous work. But the monotony…

3
The Sleepwalker

Book cover of The Sleepwalker

'Oozing dread, full of surprises and with a powerful sense of outraged humanity ... Knox's finest novel yet.' The Times
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'He said he didn't remember killing them...'

As a series of rolling blackouts plunge the city into darkness, Detective Aidan Waits sits on an abandoned hospital ward, watching a…