(1) For situations where you include dialogue tags in the middle or end of dialogue, when do you use a comma after the dialogue tag when it's immediately followed by action beats or description beats? -- I know the following example requires a comma after the dialogue tag I inquired, because it's followed immediately by an action of shaking: "So, what is it tonight Holmes, cocaine or morphine?" I inquired, shaking my head in disappointment. -- But, how about in this case. Do you add a comma after the dialogue tag I demanded? "How do you know...Who are you?" I demanded with a look of concern on my face. (2) Specific question: do you use a comma or a period after the word hesitation in the example dialogue below? I answered without hesitation, "Of course my friend! You're welcome to read my diary." Is the sentence I answered without hesitation a dialogue tag or an action beat, thus requiring a comma or a period after the word hesitation, respectively?