DANVERS – Picture yourself climbing up the steep hill on a roller coaster in breathless anticipation of that moment when it reaches the top and feel the exhilarating thrill of the free fall.Now, picture your reaction if, when you get to the top, the ride shuts down and leaves you stranded.That may be an exaggeration, but if you witnessed the abrupt – and confounding – ending to Sunday’s 36-34 St. John’s Prep loss to BC High, you’d understand.The Prep was poised to complete one of the best comebacks in schoolboy football this fall, but to do it, the Eagles would have to put the game in the hands of senior kicker Ted Beuchert for a 37-yard field goal with 9.1 seconds left in the game. They were all set to take the field when BC High coach Jon Bartlett called a timeout, “to ice him,” he said.That gave Prep coach Jim O’Leary, out of timeouts himself, time to scheme. And he felt he needed five more yards to give Beuchert – who’d made one from roughly that distance earlier this fall – a better shot. So, he asked quarterback Chris Coady to either find Tyler Coppola for a quick sideline pass or, if it wasn’t there, to throw it away.It was there. But Coppola slipped, was downed, and precious time slipped away to preserve BC High’s win.”We felt we needed five more yards,” O’Leary said. “We just wanted Chris to hit him and for him to get out of bounds. Unfortunately, he slipped.”At one point, St. John’s trailed 30-7, thanks to its inability to hold onto the football. The Prep fumbled four times in the first half, recovering none of them. Three of those turnovers resulted in BC High touchdowns, two of them on long pass plays.”You can’t do that,” O’Leary said. “Can’t turn the ball over four times – and then give them home runs on top of it.”The loss put a damper on a marvelous day by George Sessoms who ran for 199 yards, including TD runs of 60 and 59 yards in the second half as The Prep clawed its way back into the game. However, Preston Cooper ran for 140 yards of his own for BC High, and quarterback Brendan Collins added 61 while throwing three TD passes.Collins found Nick Joseph twice in the first half for 33-yard scoring passes and hit Brandon Cippola for another. Collins also ran for two scores.Late in the second quarter, Collins hit Joseph for the second of his two touchdown receptions and it was 30-7. That’s when St. John’s started gathering steam. The Eagles put together a nine-play, 47-yard drive ending in a one-yard plunge by Coady and it was 30-13 at the break.The second half began with Sessoms rushing down the near sideline for a 60-yard score, and, after a three-and-out by BC High, duplicating his effort, this time for 59 yards. With Beuchert getting both PATs, it was suddenly 30-27 with plenty of time left.But BC High game back with a 16-yard run by Collins to make it a nine-point game game (36-27), and looked to be driving for the clincher when Coppola intercepted a pass in the end zone.That resulted in a 14-play, 80-yard drive with Coady going over from the one. And when St. John’s recovered a fumble at midfield with just over a minute to go, the Eagles looked ready to do the impossible.But time simply ran out on them.