  We investigate a quantum quench from a critical to an exceptional point. The
initial state, prepared in the ground state of a critical hermitian system, is
time evolved with a non-hermitian SSH model, tuned to its exceptional point.
The single particle density matrix exhibits supersonic modes and multiple light
cones, characteristic to non-hermitian time evolution. These propagate with
integer multiples of the original Fermi velocity. In the long time limit, the
fermionic Green's function decays spatially as $1/x^2$, in sharp contrast to
the usual $1/x$ decay of non-interacting fermions. The entanglement entropy is
understood as if all these supersonic modes arise from independent
quasiparticles (though they do not), traveling with the corresponding
supersonic light cone velocity. The entropy production rate decreases with time
and develops plateaus during the time evolution, signaling the distinct
velocities in the propagation of non-local quantum correlations. At late times,
the entanglement entropy saturates to a finite value, satisfying a volume law.
