Along with the series I write, I occasionally write other titles.  

Murder Most Confusing and Twelve Hours of Murder are cozy mysteries.

Troy's Possibilities, The Second Chance of Joshua Messer, and Thanks for Coming cover a wider range of more sombre topics, including lost love, death, and second chances.  

I also have two middle grade books, which most definitely do not contain sombre topics, unless you consider fire breathing tigers to be serious.