eleven o'clock
Standing on the Point , both were vexed and perplexed ; but neither could help himself , and neither could solve the mystery . Both went home . Mrs. Watson was alarmed when her husband told her that the yacht had gone without him . It was a fact -- as Mat Mogmore had stated -- that an excursion train left Boston at eleven o'clock for Portland . Many of the people of Rockport had gone to the city to hear a great singer , and were to return in this train . Levi knew of it , or he might have doubted Mat 's story . Mr. Watson was a man of action .