Spondylolisthesis is a condition of the spine that causes lower back pain. It is a vertebra slippage that occurs at the base of the spine, in most instances. We report a case of occult spondylolisthesis of a patient with grade 1 spondylolisthesis (L4 over L5). We presented the radiologic finding, diagnosis, and treatment here. A 45-year-old female was presented with the complaints of low back pain with sciatica for 4 years. The radiologic finding showed that she had dysaesthesia on both L5 dermatome and MRI of LS Spine revealed prolapsed disc at L4/5. The patient underwent decompression, stabilization via pedicle screw at L4 and L5 with fusion at L4/5 and after constant follow-ups, she was symptom-free with a full range of motion of the spine. Posterior fusion with instrumentation of the pedicle screw is commonly considered the gold standard method of lumbar spinal fusion. Non-surgical treatment is effective in relieving low back pain of the patient in most cases however, symptomatic patients need to be treated with the surgical method.