Thomas had been about to reassure his son everything would be absolutely fine, when his vision started to blue and everything started to go very, very slowly.
It just wasn't right. Something was happening. He reached for Jamie's arm again, flailing a bit because he couldn't really see it. He needed to warn Jamie something bad was about to happen before it claimed him.
"Ja- Jamie help-" was what actually came out of his mouth, his grip on Jamie's arm tightening before everything went slack. He slumped forward in his seat and was still for a split second before his body began to jerk and shake, in the midst of a tonic-clonic seizure.