H.M. Ward (Callalily6 on QT) has signed with agent Victoria Sanders of Victoria Sanders & Associates.
I opened the query showing that commonality, then introduced the book.
Also, the query letter has got to grab the agent's attention and leave them wanting more. That's the only thing they have to go on.
I eventually abandoned the normal idea of a query letter. Trying to write the query made me totally nuts. I even took a class and paid money to help me figure it out. After the class, I sent out my first batch of queries.
I got no where. Honestly, the query sucked. It didn't showcase the emotional element of my book, or my writing style.
That was when I took a chance and rewrote the query as a sales pitch. I took one element that made my book unique/ interesting and formed the letter around it. Lots of writers told me that was stupid, which unsettled me, but I had a gut feeling that I was on the right path.
I spent a month writing the perfect sentence/ hook, then I sent out more queries. I immediately got several requests for fulls, and ultimately had multiple offers of representation from some very good agents.
So, if you have an inbox full of rejections, I would change the query letter. Try something new. Be bold. The worst thing that happens is that you get more rejection letters.