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Book 5 of the Time Police series does not disappoint. Sadly, no St Mary's involvement, but that might be for the better.
Team Weird, together with Team 235 have to stop a runaway steam train that's been chug-chug-chugging all over the timeline and across several continents.
Meanwhile at TPHQ there is a funding and staffing problem. The latter might be solved by throwing officers down the stairs.