There's a pretty good chance you're going to get into a fight sooner or later searching this guy out. So, you decide to cast a few spells just so you'll be ready for the fight.
First you turn to John, and point at him. "Strength." You speak the command word. There are no visible changes to John's body. However, all the other spells you've tried have worked, so you have no reason to believe it didn't.
Next, you speak the command word "speed" and cast the inhuman speed on yourself. You feet strange, for a moment, but the sensation passes.
"Alright. Now then, I want to look to see if the cellar connects to the house in someway. I figured it would be easiest to sneak in through here."
"Ah." John replies. "Well, I hate to be the one tell you, but there's no connection to main house from here."
"Great...." Your ears flatten and tail droop. "That means we'll have to sneak outside, and find a new way in."
"No it doesn't!"
John then walked over to a wall. He placed one hand on it, then took a few steps back.
"Erm." You stare nervously. "What, are you going to do?"
"We can get in this way!"
Then, John rushes at the wall, and punches it with all his might. Now having the effects of both the muscle and the wild strength spell on him, he punches right through the wall, causing it to collape. However, it gives you an entrance into the mansion.
"I...." You almost want to cry. "I was trying to sneak in.... So much for stealth."
Well, if you hadn't attracted any attention before, you probaly have now. You'd best act quickly.