Our adventure begins with Deeptime Frontier, as the gang ending up on a Time Lord space station that is mining the Time Vortex...but the rift it has opened seems to be the very cause of the ancient Ravenous being unleashed upon the universe, and while the station seemingly only has one dead ravenous aboard, the Doctor knows more are on the trail.  I've felt that a lot of these boxsets have been staring slow, but I think this one comes out swinging.  As much as I have enjoyed the previous sets in the Ravenous series, it must be said that the actual Ravenous haven't played a large role so far.  They were only briefly mentioned at the end of the first set, and despite making their actual debut in the final story of Ravenous 2, they really played no role in the three stories that preceded.  They were good stories and fun to listen to, but they could've gone out in any set.  This set actually begins with the Ravenous heavily involved in the plot, and even as they take a backseat for an episode or two, at least the TARDIS team is technically still on the run from them.  

Episode two of the set (Companion Piece) has Liv and Helen captured by the Nine (a previous incarnation of the Eleven), and since he regenerated from the Eight back in Doom Coalition 3, he has been collecting all of the Doctor's companions and putting them in cells in chronological order.  Liv & Helen end up in a cell with a woman who keeps getting moved back in forth in her order, Charlotte Pollard.  Yay Charley!  I always liked Charley and the Eighth Doctor together.  While it is a shame there is no reunion between the Doctor and his old friend from his earliest Big Finish days, it was still nice to hear from her again.  The story also features River Song, who is being used by the Nine to help find all the old companions, though being River things are never so simple.  This was a fun episode, fun getting to hear so many companions make brief cameo, but just well executed fun beyond that.  

In L.E.G.E.N.D., The Doctor is reunited with Liv and Helen, having caught up with them at the end of the previous adventure, and with the Eleven in tow, they end up in an adventure in 19th Century Germany, where they meet the Brothers Grimm and have to fight off a super computer and some plasm that can create anything created by an alien researcher who is in over her head...the story may have little to do with the ongoing plot of the Ravenous, but I thought it was a fun story, and at least technically they are still on the run from the beasts. Likely not to be the most memorable story of the set, but still an entertaining hour. 

The set is closed out with The Odds Against, in which the TARDIS lands on a planet, they stumble upon a dead body, the authorities show up, and it seems like a regular day at the office...only the authorities don't believe they had anything to do with the death.  A nice change.  But it turns out the Abbot of the Brotherhood of Ix that seems so helpful may have something more sinister up his sleeve.  Of course, that is because he is more sinister. Meanwhile the Eleven has lost the voice in his head of his Ninth incarnation, apparently, he was eaten up by the Ravenous, or so he thinks.  It turns out that his particular regeneration condition makes him immune to the Ravenous wanting to eat him, and the Abbot is, in fact, The Nine (Ix, get it?).  Overall, a solid conclusion, and a nice cliffhanger, to this volume in the series.

The particular fact of the Eleven's immunity to the Ravenous trying to eat him will clearly play a major role in the fourth boxset, and if this series is to follow the suit of the previous Eighth Doctor boxset series, the fourth is likely to be the finale to this storyline.  If my reviews haven't made it clear, this set has been great, and it is so far the best set in the Ravenous line.