Chronicles of Midsomer unusual with no dead (7)

I believe the answer is:

memoirs

'chronicles' is the definition.
(memoir is a kind of chronicle)

I cannot understand how the remainder of the clue works.

(Other definitions for memoirs that I've seen before include "Autobiographical account" , "Accounts of personal experiences" , "Published reminiscences" , "Memo, sir about accounts of past events" , "Personal written history" .)

I've seen this clue in The Independent.

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