  A detailed multi-wavelength study of the properties of the triple-peaked AGN
Mrk\,622 showing different aspects of the nuclear emission region is presented.
Radio, near- and mid-infrared, optical and X-ray data has been considered for
the analysis. In the optical, the WHAN diagnostic diagrams show that the three
nuclear peaks are strong active galactic nuclei since the EW of $H{\alpha}$ is
$>$\,6 \AA\, and $\log$ [NII]$\lambda$6584/H$\alpha$\, ratio is $>$\,-0.4.
Optical variability of both the continuum flux and intensity of the narrow
emission lines is detected in a time-span of 13 years. The size of the narrow
line region is found to be 2.7\,pc, with a light-crossing time of 8.7\,y.
Analysis done to an archival Hubble Space Telescope image at 1055.2\,nm shows
that the host galaxy has a 3.6\,kpc inner bar with PA\,=\,74$^\circ$, faint
spiral arms and a pseudobulge, evolving through secular processes. High
resolution mid-infrared images obtained with the \textit{Gran Telescopio
Canarias (GTC)} and the instrument \textit{CanariCam} show that the nuclear
emission at 11.6 $\mu$m is not spatially resolved. Very Large Array archival
observations at 10\,GHz reveal a core source with a total flux density of
1.47\,$\pm$\,0.03\,mJy. The spectral index of the core between 8 and 12\,GHz is
-0.5\,$\pm$\,0.2, characteristic of AGN. The core deconvolves into a source
with dimensions of 82\,$\pm$\,13\,mas\,$\,\times\,$\,41\,$\pm$\,20\,mas, and a
PA\,=\,70\,$\pm$\,18\,deg; which suggests that the core is elongated or that it
is constituted by multiple components distributed along a $\sim$65$^\circ$
axis.
