Invitation to a Dynamite Party

Peter Lovesy followed up my favorite (so far) Sergeant Cribb mystery with what I think is the weakest. Invitation to a Dynamite Party starts with Cribb receiving an introduction to bomb making and Irish Nationalism.  The suspected bombers have murdered one policeman, and a second - Cribb's faithful but not too bright Constable Thackery - seems to have become a mole.  After some intensive instruction in explosives, Cribb manages to ingratiate himself with the criminal crew and prevent (rather than solve) a high profile murder.  It's an adequate mystery, but it just didn't grab my attention.  Read it if you're reading the series and don't like missing an installment, but don't go looking for Invitation to a Dynamite Party.