Second frame from third issue of title story:
Next in the sequence of Ninth Doctor graphic novels from Titan Books. There are two stories here; the titular “Official Secrets”, which brings Nine, Rose and Jack into the middle of a UNIT investigation led by a curiously un-aged Harry Sullivan with support from Benton, and the more interesting if less fan-servicey “Slaver’s Song” then brings Team TARDIS, augmented by new UNIT character Tara Mishra, to Brazil in 1682 where there are ancient mermaid-like monsters and hints of Jack’s secret past as a Catholic priest. I especially like artist Adriana Melo’s characterisation of Tara, ad wonder who the model was.
I don’t think Harry is “curiously unaged”, but that the story is meant to be set fairly soon after the Fourth Doctor’s final break with UNIT.