The description for the scene goes on to say:
Kelly shines her light through the open doorway, revealing a
STONE SARCOPHAGUS
inside, Maltese crosses etched into the cover. It's resting on a stone dais and crisscrossed with heavy CHAINS.And no doubt because of the chains, that's why Kelly is scripted to say today's quote -
Page 19 - Kelly: 'Seems like somebody doesn't want us to look inside.'
- however, what Kelly actually says in the pilot, and with a great deal of excitement I might add, is "This is it! I know this is it!" - and they both laugh with excitement.