The last place you'd expect to find anybody lying (5)

I believe the answer is:

grave

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'the last place' is the definition.
'grave' can be an answer for 'place' (grave is a kind of place). I'm unsure of the 'the last' bit.

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for grave that I've seen before include "Hazardous" , "Sombre in the sepulchre" , "Serious in a crypt" , "Grievous, serious" , "Solemn, serious" .)

I've seen this clue in The Irish News.

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