
Aloysius Archer
historical crime
Series · historical mystery
The Ali Dawson series by Elly Griffiths has 3 books and is best read in publication order, starting with The Frozen People (2025). The next book, The Case of the Christmas Card, is due 8 October 2026.
Start here: The Frozen People (2025) — then read straight through in publication order.
The order the books were released — the default way to read the series.
Elly Griffiths's newest series gives her signature blend of procedural mystery and deep historical texture a genuinely new engine: time travel. Ali Dawson is a fifty-something detective with red hair and a nose ring who works for the fictional Department of Logistics, a secretive unit that has quietly been solving cold cases since 2020 by sending investigators physically back into the past. In The Frozen People (2025), Ali travels to 1850s London to clear the name of Cain Templeton, the eccentric Victorian ancestor of a sitting MP, and finds a case -- and a city -- far more dangerous than she expected. The Killing Time (2026) sends her back again, moving between contemporary London and its equivalent nearly two centuries earlier as a new cold case unravels across both timelines.
Where Ruth Galloway digs up the past and Ali Dawson literally walks into it, the underlying appeal is the same: Griffiths using history not as costume but as evidence, letting period detail -- Victorian London's streets, class structures and forensics-free policing -- do real investigative work. The premise adds a genre element entirely new to Griffiths's catalog without abandoning what her longtime readers come for: a sharp, funny, middle-aged woman investigator, a fair-play mystery, and a strong sense of place across two eras at once.
Three so far: two novels, The Frozen People (2025) and The Killing Time (2026), plus the shorter novella The Case of the Christmas Card (2026, book 2.5).
Publication order: The Frozen People, then The Killing Time, then the optional novella The Case of the Christmas Card.
Ali Dawson is a present-day detective whose unit solves cold cases by physically travelling back in time to investigate them -- primarily in Victorian London -- while working the case from the present day at the same time.
No -- it shares no characters or continuity with Ruth Galloway, the Brighton Mysteries or Harbinder Kaur. It's a new series with a distinct time-travel premise.
The novella The Case of the Christmas Card is scheduled for 8 October 2026. No fourth full-length novel has been announced yet as of August 2026.
Reading order last verified .