So, somebody is taking over New York City. Several chiefs of police have been murdered or locked up in insane asylums. Ditto a couple of mayors. Thus it become imperative that the Spider, once again patrol the streets and clean things up. The Spider had other ideas, such as marrying his sweetheart and going off on a honeymoon, but eventually the call of duty prevails. So, aided by his trusty "servants" (the Spider was actually a rich guy with servants), a Sikh and a former pugilist (? too lazy to check back), the Spider wipes out the bad guys and restores law and order to NYC. The restoration involves much shooting and mayhem.
FWIW, this book is listed as having zero pages because my ebook was based on a long-lost pulp. So, not being able to cross check the pulp, we're required, I'm told, to say the book has zero length. In reality, it's about 41,000 words, which would work out to something like 120 pp.