In a look ahead at a week of Cambridge and Somerville events, there’s a ManRay Reunion, comedy shows – including one that combines comedy and dance – and poetry, and so much Halloween, from frightening films to scary storytelling and $1,000-prize costume parties.

In a look ahead at a week of Cambridge and Somerville events, there’s the return of East Cambridge’s Rib Fest as well as a free “Freak Show” psychedelic rock show, a “Harry Potter and the Sacred Text” podcast show, a slew of writers reading and much more.

In a look ahead at a week of Cambridge and Somerville events, there are readings from Alice Hoffman and Gabby Rivera – in conversation with the great Roxane Gay – and a “Community Ritual” dance, the “Concerts for One” continue and much, much more.

In a look ahead at a week of Cambridge and Somerville events, there are talks with “xkcd” creator Randall Munroe and among Dissent magazine staff, the Somerville Dog Festival and 94th Feast of Saints Cosmas and Damian, comic Neil Hamburger and much more

In a look ahead at a week of Cambridge and Somerville events, there’s a four-day Campfire. Festival, an expedition to see migrating nighthawks, a pricey but delicious Julia Child dinner by our own top chefs, authors discussing “Lying for a Living” and much more.

In a look ahead at a week of Cambridge and Somerville events, there is the “La Sonnambula” opera, the unveiling of a life-size robot sculpture, an epic improv comedy fest, and theater, dance, movies and poetry, from DeWitt Henry to Olivia Gatwood, much of it free.

In a look ahead at a week of Cambridge and Somerville events, there’s the Rebel Revels wine party, a Bookstore Romance Day panel, plenty of poetry, tons of dance, and a bunch of free movies, not to mention trivia, food festivals and historical talks.

In a look ahead at a week of Cambridge and Somerville events, the Ignite! food and fire festival returns, the Tanglewood Marionettes are in town for a daytime kids show, there’s free ice cream, a “Carmina Burana” open sing, a class on Risky Quickies and much more.

In a look ahead at a week of Cambridge and Somerville events, there are Openair Circus performances, Pulitzer Prize-winning author Richard Russo reads from his latest, Beyond the 4th Wall presents an “Addams Family” musical, there’s lots of opera, comedy and more.

In a look ahead at a week of Cambridge and Somerville events, there’s a Lunar Day followed by Moon Shots and satellite-inspired plays, Chuck Klosterman with Tom Perrotta, the Ragtag circus does two nights, we hear from “The Trumpiad” and much more.