Professor Evil and the Citadel of Time

Professor Evil owns a time machine, and he's been ripping off all the best historical items from times both past and future. Your team has been charged with confiscating these items and returning them to their proper locations in time, so you now need to infiltrate the mansion and abscond with four items before Prof. Evil can secret four of them in locations inaccessible to you. Thankfully the old soul is a bit daft and won't evaporate you should he catch you lurking through the mansion, but simply scoot you out the front door where he'll forget about you immediately.