  We study 1-dimensional chains of ghost-spins with nearest neighbour
interactions amongst them, developing further the study of ghost-spins in
previous work, defined as 2-state spin variables with indefinite norm. First we
study finite ghost-spin chains with Ising-like nearest neighbour interactions:
this helps organize and clarify the study of entanglement earlier and we
develop this further. Then we study a family of infinite ghost-spin chains with
a different Hamiltonian containing nearest neighbour hopping-type interactions.
By defining fermionic ghost-spin variables through a Jordan-Wigner
transformation, we argue that these ghost-spin chains lead in the continuum
limit to the $bc$-ghost CFTs.
