"What shall we do now, Joyce?" I asked. "It seems to me that this is an occasion which distinctly requires celebrating."
Joyce thought for a moment. "Let's go for a long sail," she suggested, "and then put in at Southend and have asparagus for lunch."
I looked at her with affectionate approval. "You always have beautiful ideas," I said. Then a sudden inspiration seized me. "I've got it!" I cried. "What do you say to running down to Sheppey and paying a call on our German pals?"
Joyce's blue eyes sparkled. "It would be lovely," she said, with a deep breath; "but dare we risk it?"
"There's no risk," I rejoined. "When I said 'pay a call,' I didn't mean it quite literally. My idea was to cruise along the coast and just find out exactly where their precious bungalow is, and what they do with that launch of theirs when they're not swamping inquisitive boatmen. It's the sort of information that might turn out useful."
Joyce nodded. "We'll go," she said briefly. "What about the tide?"
"Oh, the tide doesn't matter," I replied. "It will be dead out by the time we get to Southend; but we only draw about three foot six, and we can cut across through the Jenkin Swatch. There's water enough off Sheppey to float a battleship."
It was the work of a few minutes to pull in the anchor and haul up the sails, which filled immediately to a slight breeze that had just sprung up from the west. Leaving a still peaceful, if somewhat mutilated, Canvey Island behind us, we started off down the river, gliding along with an agreeable smoothness that fitted in very nicely with my state of mind.
Indeed I don't think I had ever felt anything so nearly approaching complete serenity since my escape from Dartmoor. It is true that the tangle in which I was involved, appeared more threatening and complicated than ever, but one gets so used to sitting on a powder mine that the situation was gradually ceasing to distress me.
At all events I had made my explosive, and that was one great step towards a solution of some sort. If McMurtrie was prepared to play the game with me I should in a few days be in what the newspapers call "a position of comparative affluence," while if his intentions were less straightforward I should at least have some definite idea as to where I was. Sonia's promised disclosures were a guarantee of that.