Another Monday Morning

"Wait, murder is illegal, and i don't want to go to jail" you think, and quickly run back to your apartment where you have your time machine usefully disguised as a shower. you turn on the hot knob about halfway and disappear in a shimmering blue field.
And then you are no longer in your shower, you are standing in the middle of a busy Roman town. You hear a terrible noise, and see that a chariot is about to run you over.