The Difficult Summer had what I would call a bit more than difficulties - an aeroplane crashes onto the stables and causes a fire. Horses die, Guy ends up in hospital, and buildings are destroyed. All that has been overcome by the time of the The Perfect Horse.
Gillian's cousin, Ellen, reappears, asking Bobby and Guy to find her a horse she can event on - rather a surprising request for a girl who we feel rides because it's socially acceptable. The horse they find is called Minos, and he never puts a foot wrong. Ever.
Minos is the perfect, push button horse. Point him at a fence and he'll work out what to do and jump it. Minos is supremely confident, because nothing in his life has ever gone wrong. And then it does, and Bobby is faced, out on the course at Badminton, with a horse having a major and catastrophic collapse of confidence.
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