There was a gap of seven years between the first and second Dracula movies. In the second one as everybody knows, I didn't speak, because I said I couldn't say the lines.
If somebody plans to carry out a series of murders... then this is obviously an evil and pre-meditated attack and in that case, there could be a deterrent effect.
Be unselfish. That is the first and final commandment for those who would be useful and happy in their usefulness. If you think of yourself only, you cannot develop because you are choking the source of development, which is spiritual expansion through thought for others.