Who does Professor River Song kill in Doctor Who?

Answer 1

Now, if I was to answer this question, it would rather spoil the series for you. Please wait until the answer to this question has been broadcasted on television instead of searching for spoilers on the internet. Thank you.

As if you honestly know the answer to the question. You know no more than the rest of us....dont act as if you could answer the question but dont want to spoil it. You have no clue just like the rest of us.

Nobody knows. All that has been revealed is that she was imprisoned in the Stormcage Holding Facility for the murder of "A very good man. Best man I've ever known." (quote from The Time of Angels / Flesh and Stone)

It does seems like river song killed the doctor when she was still a young girl.