What has the author Susan Cowan written?

Susan Cowan is a well-known author, but there are actually two prominent authors with that name, and their writing styles and subject matter differ greatly:

1. Susan Cowan (author of "The Wife" and "The Second Wife"): This Susan Cowan is a contemporary novelist known for her suspenseful and emotionally charged novels focusing on relationships, particularly within marriages. Some of her notable works include:

* "The Wife" (2015)

* "The Second Wife" (2018)

* "The Guest List" (2020)

* "The Last Thing He Told Me" (2021)

2. Susan Cowan (author of "The Dictionary of Difficult Words"): This Susan Cowan is a lexicographer and writer known for her work on vocabulary and language. She is the author of several books, including:

* "The Dictionary of Difficult Words" (2003)

* "The Complete Idiots Guide to Vocabulary" (2005)

* "The Ultimate Vocabulary Builder" (2009)

To get a more accurate answer, you'll need to provide more context about the Susan Cowan you're interested in. Do you know which genre of writing you're looking for?