The Return of Doctor X (1939)

Charles C. Wilson: Detective Roy Kincaid

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Quotes 

• Detective Roy Kincaid : What is this Group 1, Group 4 business?

  Dr. Mike Rhodes : Well, you see, medical science has discovered that human blood is divided into four different groups, #1 being the most rare and #4 the most common,. We must see to it that certain of these types are not mixed in the transfusion.

  Detective Roy Kincaid : Then would you say that whoever came into Rodgers' room to kill him was looking for #1 blood?

  Dr. Mike Rhodes : It's possible. That's why I think the coronor made a mistakre in his report, so do you mind if I make a test of these stains for myself?

  Detective Roy Kincaid : No, go ahead,, Doc. 1,2,4,7,11 - it doesn't matter to me. All I know is this poor guy's number was up!