[Froide]

Originally Posted by Mort1997

Free on Amazon UK - Pursuit of a Parcel: An Ernest Lamb Mystery by Patricia Wentworth

Spoiler:

The parcel was addressed in sprawling capitals to “Antony Rossiter, Esq. By hand.” There was no more address than that.

A sea-faring man brings an unassuming brown paper parcel to the offices of a distinguished law-firm. It soon plunges intelligence operative Antony Rossiter into the lethal underground of international espionage, military intelligence and murder.

An inexplicable prowler is disturbed in a modest London villa during a lull in the great raids; young Delia Merridew meets a young man in her moonlit garden; an unobserved parachutist drops to the earth of occupied Holland. Now Scotland Yard’s Inspector Ernest Lamb and Detective Frank Abbott must unearth the truth before an implacable enemy claims more than one life in this wartime mystery.

UK
https://www.amazon.co.uk/Pursuit-Par...362247031_f_58

US
https://www.amazon.com/Pursuit-Parce...362247031_f_58

Au
https://www.amazon.com.au/Pursuit-Pa...362247031_f_58

Can
https://www.amazon.ca/Pursuit-Parcel...362247031_f_58

It seems this book can be purchased but is not currently free in the USA. However, those who might prefer to borrow rather than buy it might like to know: Worldcat indicates the book can be borrowed from some libraries.