There are 2 books in the Sinner's Creed series. The newest book is Sinner's Revenge which came out in 2016.

1
Sinner's Creed

Book cover of Sinner's Creed
First in a new series—welcome to the Sinner’s Creed Motorcycle Club, where hard bodies and hot leather are made for each other, and love gone wrong is the most irresistible of all...
 
“I was the demon-possessed monster and she was the innocent, naïve angel. But none of that matters. She…
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2
Sinner's Revenge

Book cover of Sinner's Revenge
The sizzling second book featuring the Sinner’s Creed Motorcycle Club, bikers bent on riding chrome and meting out mayhem...

Shady has spent the last eight years of his life dedicated to the Sinner's Creed Motorcycle Club. But after losing the man who was both his brother and his best friend,…