We begin to notice more strongly (through 21st century eyes) how neglectful the Mortons' parents are.

They have to go back to London but are happy to leave the children with the housekeeper who, herself, has to look after her sister's guest house.

Jon and Penny Warrender meet the rest of the Lone Piners, which is a good thing. However, it is difficult to accommodate them all within the constraints of the plot.

it is the second time we meet Jenny and she has aged three years when the other have not aged at all.

This is much more her story, but they all get involved in solving a case of sheep rustling.

For once, the twins are NOT kidnapped, or locked up - they get to trail and work with, a police officer. However, the boys all get locked up and need to be rescued, before the case is solved. ( )

Fourth in the 'Lone Pine' series about a group of teenagers who have exciting adventures. Re-read in 2020 after a gap of twelve years, and although I remembered some of the plot I had forgotten most of the detail, and very much enjoyed it. It's set in a more innocent age (late 1940s) when children were basically safe outside, other than from the real villains, who - inevitably - get caught in the end.

Great characterisation, and although some of the style is dated (I actually have a second edition hardback rather than the somewhat abridged Armada version), it's a good light read for adults and teens alike. Not necessary to have read others in the series, although it adds to the continuity and enjoyment to have done so.

Recommended to children over the age of about eight or nine, and adults who recall the series with nostalgia.

Longer review here: https://suesbookreviews.blogspot.com/2020/10/the-secret-of-grey-walls-by-malcolm... ( )

Wederom een avontuur van de Eenzame-Sparreboomclub ( Lone Pine Club). ( )