What company published both The Scorch Trials and The Death Cure?
The Death Cure:  It was published on October 11, 2011 by Delacorte Press and was preceded by "The Maze Runner" and "The Scorch Trials" and followed by the series prequels, "The Kill Order and The Fever Code." The Scorch Trials:  The novel was published on September 18, 2010 by Delacorte Press.
Delacorte Press