dr. erin conner says it's about helping kids escape from their illness, even for a minute. >> we just try to make sure that the experience is as enjoyable as possible for them. and whether or not that they will be here for, you know, through the end of their lives. >> if you think that they look like they are enjoying it as much as the kids, you're right. >> it's the best day that we'll have in the hospital and time for us to really get to know the children, even though that it is for the staff. [ cheering ] >> reporter: one of the most popular destination here is a small, but elaborate haunted house where the ghouls and goblins are ready to pounce. don't worry they're holding back on the kids. ktvu fox 2 news. >>> and that little boy saying john, it is just the costume. >> xavier. setting themstraight, adorable. >> that story sure put things in perspective when you realize what they were going through. that little boy in the hospital almost their entire life, just wish him the best. >> w