What is the verb placement after a prepositional phrase at the beginning of a sentence?

Question

What is the position of the conjugated verb after a prepositional phrase? For example, is it

In meinem Haus, muss ich...

Or

In meinem Haus, ich muss...

Answer 1

As usual, the verb is in second position. There is no comma, so it should read

[In meinem Haus] [muss] [ich] ...

Where the brackets show the inseperable parts of the sentence.