Oliver Atkinson is a stay at home dad and would be writer. Life is chaotic enough, but then on a visit to the cemetery he picks up a ghostly hitchhiker, and she's not leaving until he helps her out. 

Unfortunately helping her means getting involved in a murder investigation. When it's all over he thinks that's it, until another Hitchhiker turns up. 

The Ghostly Hitchhiker series are clean, funny reads, with an amateur detective completely out of his depth.