How did Tom convince Huck to follow Injun Joe?

Tom convinces Huck by saying he is brave and has a plan.

I’ll tell you. The back door of that No. 2 is the door that comes out into that little close alley between the tavern and the old rattle trap of a brick store. Now you get hold of all the doorkeys you can find, and I’ll nip all of auntie’s, and the first dark night we’ll go there and try ’em. And mind you, keep a lookout for Injun Joe, because he said he was going to drop into town and spy around once more for a chance to get his revenge. If you see him, you just follow. ch 27