Crito and the power of friendship

I can understand Crito's position where he wanted to help his dear friend escape from the unjust trial that he was going to be put through. He tries numerous attempts to convince Socrates to escape and flee for his life. This would not only put Socrates life in danger, but his own life would be in jeopardy. It would mean he would have to sacrifice everything for his dear friend. It reminds me of a Greek myth concerning two friends where one becomes imprisoned and is unable to say goodbye to his family. The friend steps in and decides to take his place so he can say goodbye to his family before he is executed; but if he does not return in time for his execution, then the friend must take his place in that as well.