The present invention relates to a bispecific polypeptide molecule, polypeptide chain comprising a first and a second polypeptide chain, providing a binding region, which is derived from a T cell receptor (a TCR), is for a peptide epitope, bound to a major histocompatibility complex (MHC class), to recruit specific to a binding region, which is derived from an antibody, capable of, human immune effector cells, specifically binds to a surface antigen by these cells, and the method of producing the bispecific polypeptide molecule and their use.