I am an Einstein Fellow in the Kavli Institute for Particle Astrophysics and Cosmology at Stanford. My research focuses on how supermassive black holes in the centres of galaxy power AGN, some of the most luminous objects we see in the Universe. Specifically, I am interested in how we can bridge the divide between observational and theoretical studies of accreting black holes and prepare for the next generation X-ray observatories to build up a three-dimensional picture of the infalling material just moments before it passes the event horizon, the limit beyond which nothing can escape. I am passionate about communicating science to the general public. I regularly give public lectures to a wide variety of audiences and appear on TV and radio. I am actively involved in a number of initiatives to involve the public in astronomy and physics.