In one episode , as Theodora and Eleanor walk outside Hill House at night , Theodora looks behind them and screams in fear for Eleanor to run , though the book never explains what Theodora sees .
In one episode , as Theodora and Eleanor walk outside Hill House at night , they see a ghostly family picnic that seems to be taking place in daylight . 
 Theodora screams in fear for Eleanor to run , warning her not to look back , though the book never explains what Theodora sees .