Is "They won't tell me where is the office" correct?

Question

Which sentence is correct?

1. They won't tell me where is the office.

2. They won't tell me where the office is.

Answer 1

The difference is between

a question in direct reported speech, or direct question

He asked: "Where is the station?"

He asked: "What are you doing this evening?"

and

a question in indirect reported speech, or indirect question

He asked where the station was/is (if the situation of the station has not changed).

He asked what I was doing that evening.

The word order in an indirect question is the word order of a declarative sentence, not of an interrogative one, that is:

Subject | (Auxiliary) | Verb | Object

There is no Auxiliary-Subject or Verb-Subject inversion as is the case in an interrogative sentence.

And there is not a question mark either.

Answer 2

Where is the office? They won't tell me where the office is.

Answer 3

They won't tell me where the office is is correct.

The problem with the first sentence is that using where + is is creating an interrogative mood, when the beginning of the sentence suggests an indicative mood.

The interrogative mood is commonly conveyed by inverting the subject-verb order. ^{[Source][Author]} The subject is the office and is is the verb, in the sentences you mentioned in the body of your question.