Actin Cytoskeleton in Cancer Progression and Metastasis (Part B), Volume 356 in the  International Review of Cell and Molecular Biology series, provides an overview on the roles of the actin cytoskeleton and its key structural regulators, including WASp, Paxillin, Myosin, Testin, L-Plastin and profilin, and in central processes underlying cancer progression and metastasis, such as changes in cell morphology and gene expression, acquisition of migratory and invasive capabilities, and evasion from the immune response. Specific chapters in this release cover Actin dynamics during tumor cell dissemination, Actin cytoskeleton remodeling during cancer cell migration, Cytoskeletal Mechanics Drives Heterogeneity in Epithelial Ovarian Cancer, and much more.