FSU Shooting Investigation Faces Potential Complexities; Boston Marathon's Defiant Spirit

Tonight's CBS Evening News Plus dives into the complexities surrounding the Florida State University shooting investigation. Legal experts suggest [mention specific factors, e.g., multiple witnesses, conflicting accounts, evolving evidence] could present challenges for investigators as they work to piece together the events. We'll analyze these potential hurdles and their impact on the pursuit of justice.

Also featured is a moving Reporter's Notebook segment from the Boston Marathon. The piece reflects on the anniversary of the tragic events and the remarkable spirit of defiance that emerged in its aftermath. The marathon has become a symbol of resilience, showcasing the strength and unity of the Boston community and beyond. We'll hear firsthand accounts of the determination and hope that continue to inspire.