  Electron motion on the (sub-)femtosecond time scale constitutes the fastest
response in many natural phenomena such as light-induced phase transitions and
chemical reactions. Whereas static electron densities in single molecules can
be imaged in real-space using scanning tunnelling and atomic force microscopy,
probing real-time electron motion inside molecules requires ultrafast laser
pulses. Here, we demonstrate an all-optical approach to imaging an ultrafast
valence electron wave packet in real-time with a time-resolution of a few
femtoseconds. We employ a pump-probe-deflect scheme that allows us to prepare
an ultrafast wave packet \textit{via} strong-field ionization and directly
image the resulting charge oscillations in the residual ion. This approach
extends and overcomes limitations in laser-induced orbital imaging and may
enable the real-time imaging of electron dynamics following photoionization
such as charge migration and charge transfer processes.
