There are 4 books in the Dan Valentine and Clarissa Lovelace series.
The Dan Valentine and Clarissa Lovelace series does not have a new book coming out soon. The latest book, Canary (Book 4), was published in October 1986.
The first book in the Dan Valentine and Clarissa Lovelace series, Vermilion, was published in January 1980.
The Dan Valentine and Clarissa Lovelace series primarily falls into the Amateur Sleuth genre.