Gently is a fine name for the detective in this series by Alan Hunter in which there are 46 mysteries starring George Gently. He is a gentle man and goes about solving murders without a lot of thrills and violence. He eats hard candy and is always looking to see where his next bag of sweets are going to come from.
The series began with this book, Gently Does It, written in 1955, and ends in 1999, six years before the author's death. The first nine books are available for the Kindle (at least in the US they are) but the rest are out of print and you will have to go to abe.com or one of the other used book dealers to get them as the library is likely to have a spotty collection.
2011 No 165