into the clearing again. Striding to the rim of the hollow, Frank cupped his hands and shouted:
âCap-tain Maguire! Cap-tain Ma-guire!â
The boys strained to listen, but no answering sound came up from the dark hollow, not even an echo.
âWeâll have to look for him,â determined Frank. âHe may be nearby, injured. Iâll take the woods on this side of the cabin. Joe, you and Chet comb the other side. Keep calling for him while you search!â
Accordingly, Joe and Chet plunged into the woods together. The big trees which blocked the twilight choked much of the undergrowth, making the going easy. Gradually they ceased to hear Frankâs calls. The shadow under the trees deepened to dusky gloom. In another half hour it would be dark.
âItâs almost night,â observed Chet. âMy stomach tells me itâs long after suppertime and we arenât getting anywhere here. Letâs go back!â
When they reached the clearing again, Joe called his brother. No answer came.
âOh-h,â moaned Chet in despair. âFirst no Captain Maguire. Now Frankâs gone too.â
âHush!â Joe stopped him. âWhatâs that?â
By now it was almost fully dark in the clearing. From the woods came a crackling sound of something moving.
âJoe? Chet?â came a familiar voice that caused Chet to sigh with relief. In a moment Frank had rejoined them.
âNo sign of the captain,â he reported briefly. âI did find a trail down into the hollow, though, and went along it a good way. Thatâs what took so long. But I didnât see any trace of him there, either.â
âItâs a real mystery,â agreed Joe, shaking his head. âBut weâve solved a few tough ones before âlike the Mystery of the Desert Giant. Letâs get our gear inside. We canât do anything more out here.â
Soon the delicious aroma of frying ham and baked beans filled the tiny cabin. While Chet Morton tucked away a few extra helpings of each, Frank and Joe sat with him at the kitchen table and discussed the Maguire situation.
âThe door wasnât locked and his car is in the yard,â mused Frank. âThat leaves a couple of possibilities.â
âYes. Either somebody else drove him, or he walked,â Joe deduced. âNow why would he walk? Perhaps because he was going somewhere his car couldnât go.â
âInto the hollow!â Frank exclaimed. âI was thinking that myself.â
At this moment Chet Morton finished his supper. âLook, fellows,â he volunteered, âI know how absorbed you two get in mysteries, so Iâll wash the dishes while you look for clues, but on one condition.â
âWhatâs that, Chet?â
âYou two get me some firewood for the stove.â
âItâs a deal!â The brothers laughed, and went outdoors to the captainâs woodpile. They soon returned with armloads of kindling.
While Chet worked the hand pump to get some water, the two young detectives started their search for clues.
âHereâs something,â called Joe from the living room. âI believe thereâs a shotgun or rifle missing from the captainâs gunrack! It has one empty space.â
Frank had found something he thought was even more significant in the drawer of the kitchen table.
âCome here, Joe,â he urged. The blond-haired boy found his brother poring over an ordinary kitchen calendar showing the dates for the previous two months.
âOn certain days,â Frank explained, âCaptain Maguire has written the name of a breed of dog, and the name of an owner. See this one for June 10. âBorder terrier. J. Brewer, owner.â â
âYouâre right,â admitted Joe, taking up the calendar. âBut wait! On some dates thereâs another notation, âShe screamed.â â
âScreamed!â repeated Chet, who was