I'm currently struggling to convince many people that murdering a child can be

I'm currently struggling to convince many people that murdering a child can be

I'm currently struggling to convince many people that murdering a child can be justified in some very extreme situations. There's this character in a novel who attempts to murder an innocent child because, if he hadn't, his entire family would have gotten executed with certainty (his 3 children, his lover and himself). Was the character justified in attempting to murder this child? I believe that he was. After all, to do otherwise would have resulted in the deaths of 5 other people. Aren't 5 lives generally worth more than one?

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