Original Grey's Anatomy castmember T.R. Knight is reacting to the untimely death of his fellow costar, Eric Dane. "Eric, your generosity and humor will always be a guide, your courage and honesty, a beacon," Knight, 52, wrote via Instagram on Saturday, February 21, alongside a photo of the former Shondaland stars. In the pic, Knight can be seen fixing Dane's bowtie while the late actor smiles. "My heart is a part of the vast circle that surrounds you and loves you," Knight continued in the caption.