Four children - Jane, Mark, Katharine, and Martha - are looking forward to a dull summer until they discover a magical charm that has the ability to grant wishes. After a number of experiments and misadventures, they learn that the charm grants only half of every wish. During the course of the book, they learn about the magic - thwarting it and being thwarted by it - and about themselves, and discover exactly what they've always needed. This is the fi... Knight's Castle
Roger and Ann (children of the now-adult Martha from Half Magic) discover they are spending the summer in Baltimore with their Aunt Katharine and their cousins Eliza and Jack, but for a very unfortunate reason - Roger and Ann's father is quite sick and needs to have an operation at the hospital in Baltimore. Roger collects lead soldiers, and on the way to the city has a strange encounter with one - the Old One - who promises him wishes if he earns them.... Magic by the Lake
Jane, Mark, Katharine, and Martha are spending the summer in the country, by a lake, when they catch a turtle who has the power to grant wishes (but prefers the wishes to be water-based). At first they wish for a magical lake, but that proves excessive and burdensome (no one wants water babies, pirates, and mermaids in the same square meter of water), so they get their wishes one-by-one. That doesn't work substantially better; the older girls wish them... The Time Garden
Roger, Ann, Eliza, and Jack are staying with old Mrs. Whiton (who writes books for, as Roger says, "Spartan children") when they discover the thyme garden, which contains almost every kind of thyme in existance. It also contains the Natterjack, who is a magical toad, a keen gardener, a British ex-patriate (but a very patriotic one), and a very gruff character. With the help of the Natterjack, the children select the proper thyme to enable them to trave...