H Is for Homicide by Sue Grafton

'It was one of those occasions when I suddenly realised how happy I was. I was female, single, with money in my pocket. I had nobody to answer to and no ties to speak of. As usual I'd forgotten how surges of goodwill merely presage bad news'.After a three-week-long investigation, Kinsey couldn't wait to get home. What she needed most was a few quiet days by herself - but two things happened to change all her plans.First she ran into a murder case. Then Kinsey met Bibianna Diaz, and before the night was over they were sharing a prison cell.