here is a script that will 
only work on 
single Tatort Episodenbut in batch one after one
do not use it for any ohter movieIt loads its Infos from to different sites
http://www.tatort-fundus.dehttp://de.wikipedia.org/wiki/Liste_der_Tatort-Folgenhttp://www.daserste.de/tatort/sendung.aspand it is able to merge the infos together
but you should 
first get the movie 
Tatortand its 
episodes via 
IMDbwe need the titles and the release-dates first
I have corrected the most of these data  on IMDb allready
so it should get correct results
it gets Infos actors and a screenshot as Poster
and certain other data
Please try this on an empty DB first
the descsription of the options and their setting values 
and the custom-fields and field-types
are are stored inside the script
cu meriator
(I know this one is very special, may be no one needs that)
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