'Deadly Origins' is a free prequal novella to Rachel McLean's DI Zoe Finch series set in Birmingham. I'd just finished reading her Dorset series in which Zoe Finch makes a cameo appearance and wanted to read more of her work, so downloaded this series and read my whole way through it. The protagonist from the Dorset series, DCI Lesley Clarke, appears in these books and so we get the backstory to how she ends up in Dorset. Because of this, it might make sense to read the Birmingham books before the Dorset books, but I didn't find it a problem reading them the other way round. The books within the series should be read in the right order however. As well as a separate murder enquiry in each book there is also a story that threads it way through each book and builds to the climax at the end of book 6. Because of this, and to avoid spoilers, it's best to read them in order. McLean has a book 7 in the works for each series and I can't wait to read them. I've added Rachel McLean to my list of favourite detective fiction female authors along with Ann Cleeves, Elly Griffiths, Marsali Taylor and Barbara Nadel.