Warning: spoiler down at the bottom. The perhaps-necessary prefatory explanation: the book was written in 1958 and it’s set in England. Greater London, in the direction of Cambridge and Fen Country (but then the southeastern third of England is Greater London, and was even then.)
For my own records as much as telling anyone else about the plot: Tom is being sent away from home for some weeks, while his brother gets over measles. The two boys had been looking forward to spending a delightful summer together building a tree house in the old apple tree in the bottom of their admittedly small town garden. Now Tom is stuck moping around his aunt and uncle’s completely gardenless city flat, quarantined until he’s gotten through the incubation period for measles himself.
Bored out of his skull after only a few days of confinement indoors, he lies awake, insomniac, night after night, until the fateful night when the grandfather clock downstairs strikes thirteen. He creeps downstairs to find out what’s up, and opens the door that leads out into the yard so the moonlight will fall on the clock face so he can read it…
…but outside he sees not the manky little scrap of sickly grass and paved yard, with dustbins, which his aunt and uncle have told him is there, but rather a huge garden. The sort found surrounding manor houses of a century long gone, even at the time the book was written. Rows of columnar yew trees divide the kitchen gardens from the flower walk from the croquet court from the greenhouse conservatory; this much he can see from his cursory stroll through the garden that moonlit midnight.
Over the next few days, or rather nights, he explores the garden further. There are children living here, three boys all older than he, and a forlorn girl cousin his age, always tagging along behind the boys, who prefer not to play with her for reasons other than ‘she’s a girl’ and ‘she’s younger than we are’.
His visit is scheduled to end in a couple of weeks, when his brother’s recovered from the measles and it’s clear that Tom himself isn’t going to come down with them, but Tom begs to remain. Nonplussed, his parents and aunt and uncle agree; he’s told only Peter of what’s going on, so only the two brothers understand why Tom wishes to remain. Over the course of the next few weeks, Tom and Hatty become close friends, though he is only a ghost to her, only nebulously present; walking through doors just gives him a funny feeling in his tum and he’s forced to instruct Hatty from the sidelines on how to make a toy bow because he can’t hold the knife to cut the branch or tie the string.
Though for Tom, the visits are nightly, on Hatty’s end they’re sporadic; Tom only comes every few weeks or months. Over the course of the book, we see Hatty growing up, and on Tom’s last visit, it’s clear that she’s on the verge of marrying the young man who’s been courting her.
‘Invisible friend’, dreams, or actual visits? We’ll never know.
A bit dated now–the book was written in 1958–so modern kids might be left wondering about things like the protagonist being sent away because his brother has measles. Otherwise it’s a fun book for dreamy readers. Astute readers will figure out the connection between the girl in the garden and Tom’s modern-day life, but it’s fun nevertheless. If you liked books like Magic Elizabeth or Octagon Magic, this is probably for you, especially if you’re a dreamy boy who wants to read books about boys.
(The spoiler? “Hatty”, the girl Tom keeps meeting in the garden, turns out to be the child version of the grumpy cantankerous old landlady, out of whose presence he’s been kept for the entire visit (even after he was out of quarantine).