  The phenomenon of "overlapping resonances interference-induced transparency"
(ORIT) is introduced and studied in detail for the $S_0 \to S_2/S_1$
photoexcitation of cold pyrazine (C$_4$H$_4$N$_2$). In ORIT a molecule becomes
transparent at specific wavelengths due to interferences between envelopes of
spectral lines displaying overlapping resonances. An example is the
$S_2\leftrightarrow S_1$ internal conversion in pyrazine where destructive
interference between overlapping resonances causes the $S_0 \to S_2/S_1$ light
absorption to disappear at certain wavelengths. ORIT may be of practical
importance in multi-component mixtures where it would allow for the selective
excitation of some molecules in preference to others. Interference induced
cross section enhancement is also shown.
