Robert Roberson was set to be the first person executed for a shaken baby death, but after an unorthodox move by Texas lawmakers, that's not the case.

Fearing Texas was preparing to execute a potentially innocent man, state lawmakers tried an admittedly desperate long shot when they issued a subpoena ordering death row inmate Robert Roberson III to appear before a House committee four days after his scheduled lethal injection.

Robert Roberson had been set to become the first person in the U.S. executed over a murder conviction connected to a diagnosis of shaken baby syndrome.