I hate to spoil a party, and maybe things are different depending on which side of the Altantic you are, but I believe there is an error in the corrected sample. It was suggested that the dialog should be written as ...

“So what you’re saying,” Mr M looks at him. “Is that you worked them hard like I asked?”

However, think about it logically and you will see that Mr M did not deliver two sentences but only one. It should, therefore, be punctuated as ...

“So what you’re saying,” Mr M looks at him, “is that you worked them hard like I asked?”

regards

Slave48