Bernard took a sort of melancholy pride in being the kind of boy who always gets caught. If you are that sort of boy, perhaps that’s the best way to take it. And Francis could not deny that there was something in what he said. He went on: “Then Kathleen’s my special sister and I’m not going to have her dragged into a row. (“I want to,” Kathleen put in ungratefully.) So will you and Mavis do it on your own or not?” After some discussion, in which Kathleen was tactfully dealt with, it was agreed that they would. Then Bernard unfolded his plan of campaign. “Directly we get home,” he said, “we’ll begin larking about with that old wheelbarrow—giving each other rides, and so on, and when it’s time to go in we’ll leave it at the far end of the field behind the old sheep hut near the gate. Then it’ll be handy for you at dead of night. You must take towels or something and tie around the wheel so that it doesn’t make a row. You can sleep with my toy alarm under your pillow and it won’t wake anyone but you. You get out through the dining room window and in the same way. I’ll lend you my new knife, with three blades and a corkscrew, if you’ll take care of it, to cut the canvas, and go by the back lane that comes out behind where the circus is, but if you took my advice you wouldn’t go at all. She’s not a nice Mermaid at all. I’d rather have had a seal, any day. Hullo, there’s Daddy and Mother. Come on.” They came on. The program sketched by Bernard was carried out without a hitch. Everything went well, only Francis and Mavis were both astonished to find themselves much more frightened than they had expected to be. Any really great adventure like the rescuing of a Mermaid does always look so very much more serious when you carry it out, at night, than it did when you were planning it in the daytime. Also, though they knew they were not doing anything wrong, they had an uncomfortable feeling that Mother and Daddy might not agree with them on that point. And of course they could not ask leave to go and rescue a Mermaid, with a chariot, at dead of night. It is not the sort of thing you can ask leave to do, somehow. And the more you explained your reasons the less grown-up people would think you fit to conduct such an expedition. Francis lay down fully dressed, under his nightshirt. And Mavis under hers wore her short blue skirt and jersey. The alarm, true to its trust, went off into an ear-splitting whizz and bang under the pillow of Francis, but no one else heard it. He crept cautiously into Mavis’s room and wakened her, and as they crept down in stockinged feet not a board creaked. The French window opened without noise, the wheelbarrow was where they had left it, and they had fortunately brought quite enough string to bind wads of towels and stockings to the tire of its wheel. Also they had not forgotten the knife.