  We determine complete one-loop beta functions of the multi-scalar four-point
couplings in four-dimensional $SU(N)$ gauge theories with $M$ adjoint scalar
multiplets. For adjoints scalars, the sign of the one loop gauge coupling beta
function depends solely on $M$, vanishing and changing sign precisely at
$M=22$. For the multi-scalar potential at fixed gauge coupling we find several
fixed points with different stability properties at large $N$. The analysis
crucially involves the full set of four $SU(N)$ and $O(M)$ invariant single
trace and double trace couplings. Taking the gauge coupling into account, there
are asymptotically free RG flows for $M<22$ and non-trivial fixed points for
$M=22$ at one loop, while $M>22$ appears to ruin the UV properties of the
theory. Surprisingly, uniquely between $M=22$ and $M=21$ the number of fixed
flows drops from eight to four in the large $N$ limit. There seems to be
something very special about $M=22$. More speculatively, the $M=22$ one-loop
conformal fixed point theory with $M$ adjoint scalars in $d=4$ suggests the
possibility of an isolated non-supersymmetric, purely bosonic AdS$_{4+1}
\times$S$^{22-1}$/CFT$_4$ correspondence.
  Our example suggests that extending the potential to the complete set of
terms allowed by symmetries may lead to real fixed points also in
non-supersymmetric theories descending from $\mathcal{N}=4$ super-Yang-Mills
theory.
