This book is a murder mystery, the boyfriend was the main suspect.

Read this book in 2021, when I was in the hospital. Can’t remember the year of the book. It’s set in New York. This girl was murdered walking home in New York and her sister or friend is trying to figure out who murdered her. Every one in the book has a secret. The sister or friend figures out who murdered the girl and it was the guy(the sister or friend was falling for) uncle’s protege. Also a bar under the Brooklyn bridge is mentioned. That’s all I can remember: