The London Ambulance Service (LAS) attempts to enhance its services through the adoption of a Computer Aided Dispatch (CAD) system is a well known and well documented, if not notorious, ongoing narrative of information systems (IS) failure and success (Fitzgerald, Guy & Russo 2005). This paper suggests that René Thom’s catastrophe theory (Thom 1989) could be used as a visual metaphor, which can be used to interpret the historical saga of this possibly catastrophic and possibly successful technological and social change. The capacity of the imagery from ‘cusp catastrophe’ to further inform socio-technical practices, gleaned through these interpretations, will also be discussed.