This is the kind of book that I used to give a 3 too, and call it a good book, recommendable.
It's also the kind of book that caused me to revisit my rating system so i could do it justice rather than a dis-service. People tend to not understand and, I didn't want my personal rating to add low marks to an enjoyable good book because i can be finicky.
This isn't a complicated read, and it's very pleasant read. It may be a murder mystery, but the characters are nice, realistic, like your friends next door or would like to have next door. There were some errors in the kindle version I read, but, I got through them. I might nit-pick some of the word choice, if I'm feeling particularly picky.
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I could just tell you that it was a fun, comfortable read. A cozy mystery with warm friendly characters, a hint of adventure but nothing too crazy or overwhelming. I liked Sarah and enjoyed that she's not perfect, nor is her life, her relationships, etc, but she manages keep going, make things work, raise a son, and flirt things she shouldn't be flirting with.
An Appointment with Murder isn't an adrenalin pumper and it's not dark and deep and even though it has some things that help us look at our culture and beliefs, these are just part of a pleasant tapestry and I didn't get the feeling there was some powerful philosophical look at society here. It's just pleasant, adult, and nudges boundaries yet stays in the realm of good judgement.
Summary- Recommended. A cozy mystery for adults, that pushes boundaries but stays in decent territory. This is a light read with characters that you can like, but it's not a perfect read. There are some formatting problems and errors in the kindle copy, and room to second guess the author, if your into that, but, my recommendation is to leave that chip at home, relax and let the soothing cozy mystery message some tension away for a few hours. Just enjoy something pleasant while you read it and you will be rewarded with a pleasant read.