The front cover image, provided by Xihe Bi, illustrates the comprehensive and critical review of silver-based radical reactions, which especially emphasizes reactivity, selectivity and mechanism. The material is organized according to the type of radicals generated in situ, including carbon-centered radicals and heteroatom-centered radicals, such as nitrogen, oxygen, phosphorus, and sulfur radicals. In each section the authors present the radical generation and their use in organic synthesis through oxidation, addition, coupling, radical cascades, etc. The detailed comparison and analysis allow an understanding of the role and catalytic cycle of silver salts in triggering and promoting the radical reactions, which should stimulate further research interest in the field. Details can be found in the review on pages 1422–1502 (G. Fang, X. Cong, G. Zanoni, Q. Liu, X. Bi, Adv. Synth. Catal. 2017, 359, 1422–1502; DOI 10.1002/adsc.201601179).