I love Meyer Bendet’s books, but I have not seen them around for quite a while.
He wrote True Identity and the sequel Double Identity
The Orphan – two books
Our Man in Russia
The Accused – two books- this is definitely the BEST novel I have ever read!
There’s another great book that he wrote but I forgot the title
He is definitely the best frum author in my opinion.
Marcus Lehman’s books are also good.