That Time In 1987 When The Avenger and Purple Hood Were in the Sewers

The Avenger had teamed up with international crime fighter the Purple Hood a couple of times -the first was when both "bumped into each other" while tracking down Intercrime in 1985. Terror Tunnels took place down in the sewer system below Bristol after a series of grisly deaths.

The sewerage network in Bristol, UK is made up of thousands of kilometres of sewers, pumping stations, and water recycling centers. Wessex Water manages the sewerage system for Bristol and the surrounding area. 

Just who or what was committing the crimes was never found out at the time as the fella who was inking the strip was another to just up and stop communicating.  However, decades later, in The Green Skies just what was going on was explained.

You want to know who or what? Easy -buy a copy of the series because I do not do spoilers but it was all tide up in a nice forest green bow for everyone.