Besides, there was also the chance that he might be mistaken in interpreting the man's intentions by his own fears.

At all events he seemed to have no thought of springing up and denouncing him.

Charles decided to wait and trust to luck to escape in the crowd at Charing Cross if the man made any move there.
In ten minutes the train was running into Charing Cross station at slowing speed.

Charles's mouth closed tightly, and his face flushed.
The man in the corner seat flattened his newspaper into a pocket, opened the carriage door, and sprang out on to the platform.

Charles followed him quickly, and stood still watching him make his way towards the barrier.