Congratulations to Prof. Silvina Montrul on the publication of her new co-edited volume, The Routledge Handbook of Second Language Acquisition, Morphosyntax, and Semantics (eds. Tania Ionin, Silvina Montrul, Roumyana Slabakova) (2024)! This handbook provides innovative and comprehensive coverage of research on the second language acquisition (SLA) of morphosyntax, semantics, and the interface between the two.