  Motivated by the question of whether all fast scramblers are holographically
dual to quantum gravity, we study the dynamics of a non-integrable spin chain
model composed of two ingredients - a nearest neighbor Ising coupling, and an
infinite range $XX$ interaction. Unlike other fast scrambling many-body
systems, this model is not known to be dual to a black hole. We quantify the
spreading of quantum information using an out-of time-ordered correlator
(OTOC), and demonstrate that our model exhibits fast scrambling for a wide
parameter regime. Simulation of its quench dynamics finds that the rapid
decline of the OTOC is accompanied by a fast growth of the entanglement
entropy, as well as a swift change in the magnetization. Finally, potential
realizations of our model are proposed in current experimental setups. Our work
establishes a promising route to create fast scramblers.
