He stands (as if he really was standing in front of those accusing him of murder) accused of this crime.

Hi, Ellen! I got it, thank you!

Hi Nazar, This means that the "he" is a man who is suspected of killing his wife and children. This statement would typically be used at the point in a criminal investigation when police have found sufficient evidence to begin a trial. The use of "stands" suggests the man suspected of the crime is in the trial process or about to begin that trial process before a judge and / or jury. Please, let me know if this is or is not helpful. Cheers, Ellen