Edgar Wallace

“ Briggerland and Jean put in an appearance. Jean had come straight from the house in her bathing-gown, over which she wore a light wrap. Lydia watched her with amazement, for the girl was an expert swimmer. She could dive from almost any height and could remain under water an alarming time.
"I never thought you had so much energy and strength in your little body," said Lydia, as Jean, with a shriek of enjoyment, drew herself on the raft and wiped the water from her eyes.
"There's a man up there looking at us through glasses," said Briggerland suddenly. ”