Please I am a bit confused as to the grammatical correctness of the use of punctuation mark in the sentence below:
Tell me, what do you think will happen to the boy?
Tell me: what do you think will happen to the boy?
Please could you tell me where I have used the correct punctuation mark in the examples above. And please explain to me the group of sentence where the word "TELL ME" falls in. Is it indicative or imperative sentence?