A Vow of Poverty by Veronica Black is the 9th book of the Sister Joan cozy mystery series set in late 20th century Cornwall on the moors. The Order of the Daughters of Compassion have taken the vow of poverty, but even they need to make ends meet. When the idea for hosting guests in a quiet retreat didn't work out (A Vow of Fidelity) they must find another source of revenue. The house originally belonged to the Tarquin family. Traces of its former luxury and elegance remain in the architecture and large rooms that have been converted to practical use. The attics are crammed with family possessions left there when the house was sold to the convent: treasures or rubbish? it's Sister Joan's job to clean out the attics and find anything valuable that they can sell. Shortly after she receives the assignment, a flyer appears in their door advertising attic/storeroom clearing services. Sister Joan enquires at the listed address, and speaks to the young woman who is the receptionist for several firms, and has never met them - she's new on the job from a temp agency. But somehow an estimate sheet is in the files...Sister Joan must get back to work at the convent, but the oddity bothers her.
The young woman calls the convent in distress, and asks Sister Joan to meet her in town. Sister Joan goes to the café, but Jane never shows up, and the office where she works is locked. Sister Joan soon learns from the police that Jane was strangled, and once again, she finds herself working closely with Detective Inspector Alan Mills on a murder enquiry. It's funny how little time Sister Joan actually spends in the attic during this book! She spends far more time describing her storeroom cleanout to everyone she meets, and helping Alan investigate Jane's murder plus another. Sister Joan's Mother Superior Dorothy shows admirable understanding of the situation, frequently assigning Sister Joan to go into town (which allows her to cooperate with the police investigation). Although Sister Joan has excellent credibility with Alan Mills, he does not believe her at first when she tells him about seeing a supposedly dead member of the Tarquin family. But she's right of course, as he comes to know. Working together, they solve the crimes. A miracle occurs in Sister Joan's final cleanup - followed by an even more unbelievable action on her part. Gentle, enjoyable reading.