This paper reports qualitative research on constructing critical thinking scenarios in online legal English classes at a private university in Colombia. This study aimed to enhance law students' critical thinking skills development in EFL (English as a Foreign Language) classroom through virtual tools by implementing a descriptive case analysis. Data were gathered through a journal, a survey and a focus group. It was demonstrated that when students are trained in critical thinking, they learn to develop specific abilities such as reasoning, making proposals, identifying and solving problems, making inferences, making decisions according to their prior knowledge and the context needs. Furthermore, the strategies contributed to improving students' communication skills in the foreign language.