Part 3

She fell face flat on the stiff hall carpet. Someone had just knocked her over! She staggered to her knees, and looked down the dark hall. There was no one.
She raced back into her compartment, and felt around for her flashlight. She beamed it's light down the hall, and slowly walked forward.
Suddenly, she heard the pounding of footsteps behind her. She whizzed around to see two train stewards.
"Miss?" they called, catching up with Dot. "Have you seen a man with a light brown coat?"
"No, but I just got flattened by someone!" Dot answered. "What's happened?"
"The engineer got tied up, and the conductor got knocked out! We found them in the engine car when the train stopped." The two men raced on down the hall. Why would someone tie up the engineer and knock out the conductor? she wondered. Of course! To rob the train! One man would stop the train so they could get away, and the other man or men would rob all the cars!
Herbert and Tip swung open their compartment door, and stepped out into the hall.
"Dot! What's going on?" Herbert asked.
"The train's being robbed! Come one!" The boys' eyes grew big. She dashed off down the hall, and they followed. By now, a few people had stepped out of their rooms to see why the train had stopped. Dot whizzed by them. Were the robbers still on the train? 

To Be Continued!