Predictor Chapter9 Breneisha

This chapter is called THE DOOR IN THE ROPED-OFF TUNNEL and I wounder if Doon an Lina is going to find out who was that person that was in the tunnel? Also, I wounder if Lina grandmother is sick cause probably the sickness is going around Ember again? [Cause that how Lina father died.] Also, I wounder if the person that was in the tunnel new that Doon an Lina was in the pipe works?