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Humanity has truly peaked when that scientific research team developed the device to see into the future.
(self.twosentencehorror)
Two Sentence Horrors.
The title should be the first sentence, while the body should be the second.
Keep it spooky.
This basically puts the payoff before the setup, which deflates it. It could work as a horror story, but you should put the suicides first, and the clairvoyance device at the end.
Maybe:
Of course, this also doesn't provide enough setup. So instead have the detective called to the individual suicides to investigate, and they slowly become aware of how these people are connected, and then at the end, they find out about the clairvoyance device.