Maine author Mira Ptacin discusses her fascinating new book, The In-Betweens, about a community of mediums and other Spiritualists who’ve been gathering at Camp Etna, in the Maine woods, since the 1870s to parlay with the departed. The reading starts at 7 p.m. at Print (273 Congress St., Portland). Free. 536-4778. printbookstore.com.
Through November 1
The artists in Shift, the new show at Able Baker Contemporary (29 Forest Ave., Portland), use “reflections, imperfect symmetry and pairs, and mirroring” to reveal the difference between reality and fakery, according to curator Tracy McKena. The exhibit includes work in various media by Rose Marasco, Paolo Arao, Jen Hitchings, Emilie Stark-Menneg and others. 917-545-6235. ablebakercontemporary.com.