Missing Letter of Recommendation due to Prof's personal emergency, Help needed

[JoyD]

I'm applying for PhD programs in Computer Science and my recommender had to travel international and lost contact with me. He did not turn in letter of recommendation for me. I had three LoR, one with another prof I did research with, one from a teaching faculty I TAed with and one from him. I started to work on his project since last spring. What should I do now?

[emeraldsapphire]

Are you able to get in touch with your professor now? If so, you could contact your programs and see if they would be willing to accept a late letter. 

[NardyPardy]

You should immediately locate a new reference. Apologize to this new reference about reaching so late but explain to them what your situation is.