I found you: a novel by Lisa Jewell (Atria Books, 2017)
This seemingly ordinary novel about a single mom somewhere in England (I don’t know English geography very well) sort of turns into a murder mystery when you’re not looking. A man shows up in a beach town without his memory and the single mom takes him in, realizing this is probably a stupid move. Luckily it works out all right. Meanwhile other pieces of the story are narrated as seemingly separate stories, one about a young foreign bride and one about a family with two teenagers, which eventually all come together. The character development is very good, and the descriptions of life in England will be interesting to American readers. This is a well-written novel which keeps the reader wondering what will happen next, without so much graphic violence that you can’t sleep until you’re done.